AMRM Publications Directory

Categories

Adulterants

  1. Development and validation of a liquid chromatography-tandem mass spectrometry method for the quantitation of microcystins in blue-green algal dietary supplements Parker CH, Stutts WL, DeGrasse SL. J Agric Food Chem. 2015 Dec 2;63(47):10303-12.
  2. Development and validation of UPLC and LC-MS/MS methods for the simultaneous determination of anti-obesity drugs in foods and dietary supplements. Kim JY, Park HJ, Kim JW, Lee JH, Heo S, Yoon CY, Cho S. Arch Pharm Res. 2016 Jan;39(1):103-14.
  3. Evaluation of dietary supplement contamination by xenobiotic and essential elements using microwave-enhanced sample digestion and inductively coupled plasma-mass spectrometry Zinn GM, Rahman GM, Faber S, Wolle MM, Pamuku M, Kingston HM. J Diet Suppl. 2016;13(2):185-208.
  4. Highly sensitive on-site detection of drugs adulterated in botanical dietary supplements using thin layer chromatography combined with dynamic surface enhanced Raman spectroscopy Fang F, Qi Y, Lu F, Yang L. Talanta. 2016 Jan 1;146:351-7.
  5. Identification and structural elucidation of three new tadalafil analogues found in a dietary supplement. Lee JH, Mandava S, Baek SY, Lee YM. J Pharm Biomed Anal. 2016 May 10;123:1-9.
  6. Identification of a new tadalafil analogue in an adulterated dietary supplement: trans-Bisprehomotadalafil Lee JH, Kim HJ, Mandava S, Hwang J, Park HJ, Cho S, Baek SY, Lee J. J Pharm Biomed Anal. 2015 Nov 10;115:352-8.
  7. Rapid determination of sildenafil and its analogues in dietary supplements using gas chromatography-triple quadrupole mass spectrometry. Mokhtar SU, Chin ST, Kee CL, Low MY, Drummer OH, Marriott PJ. J Pharm Biomed Anal. 2016 Mar 20;121:188-96.
  8. Separation and identification of a novel tadalafil analogue adulterant in a dietary supplement Huang YC, Lee HC, Lin YL, Li CY, Tsai CF, Cheng HF. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2016 Feb;33(2):179-85.
  9. Arsenic speciation and fucoxanthin analysis from seaweed dietary supplements using LC-MS. Avula B, Wang YH, Khan IA. J AOAC Int. 2015 Mar-Apr;98(2):321-9.
  10. Assessment of antioxidant and antibacterial potential of medicinal herbs and botanical preparations Kowalska T, Cieśla Ł. J AOAC Int. 2015 Jul-Aug;98(4):847-9.
  11. Detection of a tadalafil analogue as an adulterant in a dietary supplement for erectile dysfunction Ulloa J, Sambrotta L, Redko F, Mazza ON, Garrido G, Becher EF, Muschietti L. J Sex Med. 2015 Jan;12(1):152-7.
  12. Detection of structurally similar adulterants in botanical dietary supplements by thin-layer chromatography and surface enhanced Raman spectroscopy combined with two-dimensional correlation spectroscopy. Li H, Zhu Qx, Chwee Ts, Wu L, Chai Yf, Lu F, Yuan YF. Anal Chim Acta. 2015 Jul 9;883:22-31.
  13. Detection, identification and quantification by 1H NMR of adulterants in 150 herbal dietary supplements marketed for improving sexual performance Gilard V, Balayssac S, Tinaugus A, Martins N, Martino R, Malet-Martino M. J Pharm Biomed Anal. 2015 Jan;102:476-93.
  14. Determination of anabolic agents in dietary supplements by liquid chromatography-high-resolution mass spectrometry. Odoardi S, Castrignanò E, Martello S, Chiarotti M, Strano-Rossi S. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015;32(5):635-47.
  15. Development and application of a novel SPE-method for bioassay-guided fractionation of marine extracts Cutignano A, Nuzzo G, Ianora A, Luongo E, Romano G, Gallo C, Sansone C, Aprea S, Mancini F, D'Oro U, Fontana A. Mar Drugs. 2015 Sep 11;13(9):5736-49.
  16. Development of a stationary phase optimised selectivity liquid chromatography based screening method for adulterations of food supplements for the treatment of pain Deconinck E, Kamugisha A, Van Campenhout P, Courselle P, De Beer JO. Talanta. 2015 Jun 1;138:240-6.
  17. Development of an ultra-high-performance liquid chromatography coupled to high-resolution quadrupole-Orbitrap mass spectrometry method for the rapid detection and confirmation of illegal adulterated sedative-hypnotics in dietary supplements Jiang S, Tan H, Guo C, Gong L, Shi F. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015;32(10):1749-59.
  18. Evaluation of vibrational spectroscopic methods to identify and quantify multiple adulterants in herbal medicines Rooney JS, McDowell A, Strachan CJ, Gordon KC. Talanta. 2015 Jun 1;138:77-85.
  19. Identification of Ginkgo biloba supplements adulteration using high performance thin layer chromatography and ultra high performance liquid chromatography-diode array detector-quadrupole time of flight-mass spectrometry Avula B, Sagi S, Gafner S, Upton R, Wang YH, Wang M, Khan IA. Anal Bioanal Chem. 2015 Oct;407(25):7733-46.
  20. Wide-scope screening of illegal adulterants in dietary and herbal supplements via rapid polarity-switching and multistage accurate mass confirmation using an LC-IT/TOF Hybrid instrument Guo B, Wang M, Liu Y, Zhou J, Dai H, Huang Z, Shen L, Zhang Q, Chen B. J Agric Food Chem. 2015 Aug 12;63(31):6954-67.
  21. Analysis of β-N-methylamino-L-alanine (BMAA) in spirulina-containing supplements by liquid chromatography-tandem mass spectrometry. McCarron P, Logan AC, Giddings SD, Quilliam MA. Aquat Biosyst. 2014 Aug 8;10:5.
  22. Chemical profiling and quantification of monacolins and citrinin in red yeast rice commercial raw materials and dietary supplements using liquid chromatography-accurate QToF mass spectrometry: Chemometrics application. Avula B, Cohen 2, Wang 1, Sagi 1, Feng 3, Wang 1, Zweigenbaum 4, Shuangcheng 3, Khan IA. J Pharm Biomed Anal. 2014 Nov;100:243-53.
  23. Profiling of dehydropyrrolizidine alkaloids and their N-oxides in herbarium-preserved specimens of amsinckia species using HPLC-esi(+)MS. Colegate SM, Welsh SL, Gardner DR, Betz JM, Panter KE. J Agric Food Chem. 2014 Jul 30;62(30):7382-92.
  24. Screening for multiple weight loss and related drugs in dietary supplement materials by flow injection tandem mass spectrometry and their confirmation by liquid chromatography tandem mass spectrometry. Song F, Monroe D, El-Demerdash A, Palmer C. J Pharm Biomed Anal. 2014 Jan;88:136-43.
  25. Speciation analysis of arsenic in prenatal and children's dietary supplements using microwave-enhanced extraction and ion chromatography-inductively coupled plasma mass spectrometry. Wolle MM, Rahman GM, Kingston HM, Pamuku M. Anal Chim Acta. 2014 Mar 25;818:23-31.
  26. Dehydropyrrolizidine alkaloids, including monoesters with an unusual esterifying acid, from cultivated Crotalaria juncea (sunn hemp cv.Tropic Sun). Colgate SM, Gardner DR, Joy RJ, Betz JM, Panter KE. J Agric Food Chem 2012; 60: 3541-50.
  27. Protocol for an electrospray ionization tandem mass spectral product ion library: Development and application for identification of 240 pesticides in foods. Zhang K, Wong JW, Yang P, Hayward DG, Sakuma T, Zou Y, Schreiber A, Borton C, Nguyen TV, Kaushik B, Oulkar D. Anal Chem 2012; 84: 5677-84.
  28. Detection of high levels of pyrrolizidine-N-oxides detected in the endangered plant Cryptantha crassipes (Terlingua Creek Cat’s-eye) using HPLC-ESIMS. Williams M T, Warnock N, Betz JM, Gardner DR, Lee ST, Molyneux RJ, Colegate SM. Phytochem. Anal. 2011; 22: 532-40.
  29. Determination of zearalenone in botanical dietary supplements, soybeans, grains, and grain products by immunoaffinity column cleanup and liquid chromatography: Single-laboratory validation. Trucksess MW, Fu WS, Oles CJ, White KD. J AOAC Int 2011; 94: 589-95.
  30. Multiresidue pesticide analysis in ginseng and spinach by nontargeted and targeted screening procedures. Hayward DG, Wong JW, Zhang K, Chang J, Shi F, Banerjee K, Yang P. J AOAC Int 2011; 94: 1741-51.
  31. Aflatoxins and ochratoxin A in tea prepared from naturally contaminated powdered ginger. Iha MH, Trucksess MW. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2010; 27: 1142-7.
  32. Determination of aflatoxins in botanical roots by a modification of AOAC Official Method℠ 991.31: Single-laboratory validation. Weaver CM, Trucksess MW. J AOAC Int 2010; 93: 184-9.
  33. Determination of fumonisin B1 in botanical roots by liquid chromatography with fluorescence detection: Single-laboratory validation. Oles CJ, Trucksess MW. J AOAC Int 2010; 93: 1155-60.
  34. Multiresidue pesticide analysis of ginseng powders using acetonitrile- or acetone-based extraction, solid-phase extraction cleanup, and gas chromatography−mass spectrometry/selective ion monitoring (GC-MS/SIM) or − tandem mass spectrometry (GC-MS/MS). Wong JW, Zhang K, Tech K, Hayward DG, Krynitsky AJ, Cassias I, Schenck FJ, Banerjee K, Dasgupta S, Brown D. J Agric Food Chem 2010; 58: 5884–96.
  35. Rapid analytical method for the determination of aflatoxins in plant-derived dietary supplement and cosmetic oils. Mahoney N, Molyneux RJ. J Agric Food Chem 2010; 58: 4065–70.
  36. Organohalogen and organophosphorous pesticide method for ginseng root--a comparison of gas chromatography-single quadrupole mass spectrometry with high resolution time-of-flight mass spectrometry. Hayward DG, Wong JW. Anal Chem 2009; 81: 5716-23.
  37. Sampling and analytical variability associated with the determination of total aflatoxins and ochratoxin A in powdered ginger sold as a dietary supplement in capsules. Trucksess MW, Whitaker TB, Weaver CM, Slate A, Giesbrecht FG, Rader JI, Betz JM. J Agric Food Chem 2009; 57: 321-25.
  38. Determination of aflatoxins B1, B2, G1, and G2 and ochratoxin A in ginseng and ginger by multitoxin immunoaffinity column cleanup and liquid chromatographic quantitation: Collaborative study. Trucksess MW, Weaver CM, Oles CJ, Fry Jr FS, Noonan GO, Betz JM, Rader JI. J AOAC Int 2008; 91: 511-23.
  39. Analysis of organophosphorus pesticides in dried ground ginseng root by capillary gas chromatography-mass spectrometry and -flame photometric detection. Wong JW, Hennessy MK, Hayward DG, Krynitsky AJ, Cassias I, Schenck FJ. J Agric Food Chem 2007; 55: 1117–28.
  40. Determination of aristolochic acid I in botanicals and dietary supplements potentially contaminated with aristolochic acid I using LC-UV with confirmation by LC/MS: Collaborative study. Sorenson WR, Sullivan D. J AOAC Int 2007; 90: 925-33.
  41. Aflatoxins in ginseng roots. D'Ovidio K, Trucksess M, Weaver C, Horn E, McIntosh M, Bean G. Food Addit Contam 2006; 23: 174-80.
  42. Determination of aristolochic acid in botanicals and dietary supplements by liquid chromatography with ultraviolet detection and by liquid chromatography/mass spectrometry: Single laboratory validation confirmation. Trujillo WA, Sorenson WR, La Luzerne P, Austad JW, Sullivan D. J AOAC Int 2006; 89: 942-59.

Books

  1. The American Herbal Products Association’s Botanical Safety Handbook, Second Edition external link disclaimer Gardner Z, McGuffin M (Editors). CRC Press
  2. American Herbal Pharmacopoeia: Botanical Pharmacognosy - Microscopic Characterization of Botanical Medicines Upton R, Graff A, Jolliffe G, Länger R, Williamson E (Editors). CRC Press

Botanical Authenticity

  1. Botanical authentication using one-class modeling Harnly J. J AOAC Int. 2023 Feb 8:qsad023.
  2. Mass spectrometry-based nontargeted and targeted analytical approaches in fingerprinting and metabolomics of food and agricultural research Liu Z, Zhang M, Chen P, Harnly JM, Sun J. J Agric Food Chem. 2022 Sep 14;70(36):11138-11153.
  3. Characterization of maca (Lepidium meyenii/Lepidium peruvianum) using a mass spectral fingerprinting, metabolomic analysis, and genetic sequencing approach Geng P, Sun J, Chen P, Brand E, Frame J, Meissner H, Stewart J, Gafner S, Clark S, Miller J, Harnly J. Planta Med. 2020 Jul;86(10):674-685.
  4. Identification of adulteration in botanical samples with untargeted metabolomics Wallace ED, Todd DA, Harnly JM, Cech NB, Kellogg JJ. Anal Bioanal Chem. 2020 Jul;412(18):4273-4286.
  5. Authentication of black cohosh (Actaea racemosa) dietary supplements based on chemometric evaluation of hydroxycinnamic acid esters and hydroxycinnamic acid amides. Geng P, Chen P, Sun J, McCoy JH, Harnly JM. Anal Bioanal Chem. 2019 Nov;411(27):7147-7156.
  6. Recommendations for validation of real-time PCR methods for molecular diagnostic identification of botanicals. Newmaster SG, Shanmughanandhan D, Kesanakurti P, Shehata H, Faller A, Noce ID, Lee JY, Rudzinski P, Lu Z, Zhang Y, Swanson G, Hanner R, Ragupathy S. J AOAC Int. 2019 Mar 14. doi: 10.5740/jaoacint.18-0321. [Epub ahead of print]
  7. How similar is similar enough? A sufficient similarity case study with Ginkgo biloba extract Catlin NR, Collins BJ, Auerbach SS, Ferguson SS, Harnly JM, Gennings C, Waidyanatha S, Rice GE, Smith-Roe SL, Witt KL, Rider CV. Food Chem Toxicol. 2018 Aug;118:328-339.
  8. Comparison of metabolomics approaches for evaluating the variability of complex botanical preparations: green tea (Camellia sinensis) as a case study Kellogg JJ, Graf TN, Paine MF, McCune JS, Kvalheim OM, Oberlies NH, Cech NB. J Nat Prod. 2017 May 26;80(5):1457-1466.
  9. Feruloyl dopamine-O-hexosides are efficient marker compounds as orthogonal validation for authentication of black cohosh (Actaea racemosa)-an UHPLC-HRAM-MS chemometrics study Geng P, Harnly JM, Sun J, Zhang M, Chen P. Anal Bioanal Chem. 2017 Apr;409(10):2591-2600.
  10. Biochemometrics for natural products research: comparison of data analysis approaches and application to identification of bioactive compounds Kellogg JJ, Todd DA, Egan JM, Raja HA, Oberlies NH, Kvalheim OM, Cech NB. J Nat Prod. 2016 Feb 26;79(2):376-86.
  11. Comparison of flow injection MS, NMR, and DNA sequencing: methods for identification and authentication of black cohosh (Actaea racemosa). Harnly J, Chen P, Sun J, Huang H, Colson KL, Yuk J, McCoy JA, Reynaud DT, Harrington PB, Fletcher EJ. Planta Med. 2016 Feb;82(3):250-62.
  12. ePlantLIBRA: A composition and biological activity database for bioactive compounds in plant food supplements Plumb J, Lyons J, Nørby K, Thomas M, Nørby E, Poms R, Bucchini L, Restani P, Kiely M, Finglas P; PlantLIBRA Consortia. Food Chem. 2016 Feb 15;193:121-7.
  13. A rapid method for chemical fingerprint analysis of Pan Panax notoginseng powders by ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry Liu P, Yu HS, Zhang LJ, Song XB, Kang LP, Liu JY, Zhang J, Cao M, Yu K, Kang TG, Ma BP. Chin J Nat Med. 2015 Jun;13(6):471-80.
  14. Profiling polyphenols in five Brassica species microgreens by UHPLC-PDA-ESI/HRMS(n.) Sun J, Xiao Z, Lin LZ, Lester GE, Wang Q, Harnly JM, Chen P. J Agric Food Chem. 2013 Nov 20;61(46):10960-70.
  15. AOAC INTERNATIONAL guidelines for validation of botanical identification methods. AOAC INTERNATIONAL J AOAC Int 2012; 95: 268-72.
  16. Classification of cultivation locations of Panax quinquefolius L samples using high performance liquid chromatography-electrospray ionization mass spectrometry and chemometric analysis. Sun X, Chen P, Cook SL, Jackson GP, Harnly JM, Harrington PB. Anal Chem. 2012 Apr 17;84(8):3628-34.
  17. Detection of adulterated Ginkgo biloba supplements using chromatographic and spectral fingerprints. Harnly JM, Luthria D, Chen P. J AOAC Int. 2012 Nov-Dec;95(6):1579-87.
  18. LC-PDA-ESI/MS identification of the phenolic components of three compositae spices: chamomile, tarragon, and Mexican arnica. Lin LZ, Harnly JM. Nat Prod Commun. 2012 Jun;7(6):749-52.
  19. Probability of identification: A statistical model for the validation of qualitative botanical identification methods. LaBudde RA, Harnly J. J AOAC Int 2012; 95: 273-85.
  20. A comparison of analytical and data preprocessing methods for spectral fingerprinting. JM, Mukhopadhyay S, Lin L-Z, Luthria DL. Appl Spec 2011; 65: 250-9.
  21. A flow-injection mass spectrometry fingerprinting method for authentication and quality assessment of Scutellaria lateriflora-based dietary supplements. Sun J, Chen P. Anal Bioanal Chem 2011; 401: 1577-84.
  22. A non-targeted approach to chemical discrimination between green tea dietary supplements and green tea leaves by HPLC/MS. Sun J, Chen P, Lin LZ, Harnly JM. J AOAC Int 2011; 94: 487-97.
  23. Differentiation of Panax quinquefolius grown in the USA and China using LC/MS-based chromatographic fingerprinting and chemometric approaches. Chen P, Sun J. Anal Bioanal Chem. 2011 399: 1877-89.
  24. Discrimination among Panax species using spectral fingerprinting. Chen P, Luthriau D, Harrington Pde B, Harnly JM. J AOAC Int 2011; 94: 1411-21.
  25. Flow injection mass spectroscopic fingerprinting and multivariate analysis for differentiation of three Panax species. Chen P, Harnly JM, Harrington PD. J AOAC Int. 2011: 94: 909.
  26. Identification, quantitation, and comprehensive assessment of green, white, and pu-erh teas using UPLC/UV/MS.external link disclaimer Zhao Y, Chen P, Lin L-Z, Harnly JM, Yu L, Li Z. Food Chem 2011;126: 1269-77.
  27. Chromatographic fingerprint analysis and rutin and quercetin compositions in the leaf and whole-plant samples of di-and tetraploid Gynostemma pentaphyllum.external link disclaimer Xie Z, Zhao Y, Chen P, Jing P, Yue J, Yu L. J Ag Food Chem 2010; 59: 3042-48.
  28. Direct injection mass spectral fingerprints demonstrate changing chemical patterns in Rio Red grapefruit as a function of growing year, farming mode (conventional and organic), and time of harvest. Chen P, Harnly J, Lester G. J Ag Food Chem 2010; 58: 4545-53.
  29. Fingerprint analysis and the application of HPTLC to the determination of identity and quality of botanicals, from an industry perspective. Sudberg S, Elan M, Terrazas J, Sudberg S, Patel K, Pineda J, Fine B. J AOAC Int 2010; 93: 1367-75.
  30. Mass spectroscopic fingerprinting method for differentiation between Scutellaria lateriflora and the Germanders (Teucrium canadense and T. chamaedrys) species. Chen P, Lin LZ, Harnly JM. J AOAC Intl 2010; 93: 1148-54.
  31. Phenolic component profiles of mustard greens, yu choy and 15 other brassica vegatables. Lin L-Z, Harnly JM. J Ag Food Chem 2010; 58: 6850-7.
  32. Successful isolation and PCR amplification of DNA from National Institute of Standards and Technology herbal dietary supplement standard reference material powders and extracts. Cimino MT. Planta Med 2010 Mar; 76: 495-7.
  33. Thin layer chromatography in botanical analysis. Reich E, Sherma J. J AOAC Int 2010; 93: 1347-8.
  34. Chromatographic differentiation between skullcap (Scutellaria laterifora), potentially hepatotoxic adulterant geermanders (Teucrium canadense. T. chamaedrys), and three other plants of the Scutellaria genus. Lin L-Z, Harnly J, Upton R. Phytochem Anal 2009; 20: 298-306
  35. Chromatographic fingerprint analysis of Pycnogenol(R) dietary supplements. Chen P, Song FH, Lin LZ. J AOAC Int 2009 92:624-632
  36. Identification of the phenolic components of collard greens, kale, and Chinese broccoli. Lin L-Z, Harnly JM. J Ag Food Chem 2009; 57: 7401-8.
  37. A systematic approach to the identification of common hydroxycinnamoylquinic acids in plant materials. Lin, L-Z, Harnly, JM. J Ag Food Chem 2008 56:10105-10114
  38. Chromatographic profiles of ginkgo biloba leaves and selected products. Lin L-Z, Chen P, Ozcan M, Harnly JM. J Ag Food Chem 2008 56:6671-6679.
  39. Discriminating between cultivars and treatments of broccoli using mass spectral fingerprinting and analysis of variance principal component analysis.external link disclaimer Luthria DL, Lin L.-Z, Robbins RJ, Finley JW, Banuelos GS, Harnly JM. J Ag Food Chem 2008; 56: 9819-27.
  40. Phenolic components and profiles of green and fermented teas. Lin L-Z, Harnly JM. J Ag Food Chem 2008; 56: 8130-40.
  41. Phenolic compounds and chromatographic profiles of pear skins (Pyrus spp.). Lin L-Z, Harnly JM. J Ag Food Chem 2008; 56: 9094-101.
  42. Polyphenolic profiles of common bean (Phaseolus vulgaris L.). external link disclaimer Lin L-Z, Harnly JM, Pastor-Corrales MS, Luthria DL. Food Chem 2008; 107: 399-410.
  43. UV spectral fingerprinting and analysis of variance-principal component analysis: A useful tool for characterizing sources of variance in plant materials. Luthria D, Mukhopadhyay S, Robbins R, Finley J, Banuelos G, Harnly J. J Ag Food Chem 2008; 56: 5457-62.
  44. Standard operating procedure for the collection and preparation of voucher plant specimens for use in the nutraceutical industry. Hildreth J, Hrabeta-Robinson E, Applequist W, Betz J, Miller J. Anal Bioanal Chem 2007; 389:13-7.

Collaborative Studies

  1. Interlaboratory Trial for Measurement of Vitamin D and 25-Hydroxyvitamin D [25(OH)D] in Foods and a Dietary Supplement Using Liquid Chromatography-Mass Spectrometry. Roseland JM, Patterson KY, Andrews KW, Phillips KM, Phillips MM, Pehrsson PR, Dufresne GL, Jakobsen J, Gusev PA, Savarala S, Nguyen QV, Makowski AJ, Scheuerell CR, Larouche GP, Wise SA, Harnly JM, Williams JR, Betz JM, Taylor CL. J Agric Food Chem. 2016 Apr 15. [Epub ahead of print]
  2. Determination of total iodine in infant formula and adult/pediatric nutritional formula by inductively coupled plasma-mass spectrometry (ICP-MS): collaborative Zywicki RS, Sullivan DM. J AOAC Int. 2015 Sep-Oct; 98:1407-16.
  3. Determination of ginsenoside content in Panax ginseng C.A. Meyer and Panax quinquefolius L. root materials and finished products by high-performance liquid chromatography with ultraviolet absorbance detection: Interlaboratory study. Brown N, Yu R. J AOAC Int 2013 Jan-Feb; 96: 12-9.
  4. Determination of lycopene in dietary supplements and raw materials by high-performance liquid chromatography: Collaborative study. Waysek EH, Schierle J, Duesterloh A, Deshpande J, Austad J. J AOAC Int 2010; 93: 499-509. Erratum in J AOAC Int 2012; 95:286
  5. Determination of aconitum alkaloids in dietary supplements and raw botanical materials by liquid chromatography/UV detection with confirmation by liquid chromatography/tandem mass spectrometry: Collaborative study. Wong SK. J AOAC Int 2009 Jan-Feb; 92: 111-8.
  6. Determination of coenzyme Q10 content in raw materials and dietary supplements by high-performance liquid chromatography-UV: Collaborative study. Lunetta S, Roman M. J AOAC Int 2008 91: 702-8.
  7. Determination of hydrastine and berberine in goldenseal raw materials, extracts and dietary supplements by high-performance liquid chromatography with UV: Collaborative study. Brown PN, Roman MC. J AOAC Int 2008; 91: 694-701. Erratum J AOAC Int 2012 95:286.
  8. Determination of total soy isoflavones in dietary supplements, supplement ingredients, and soy foods by high-performance liquid chromatography with ultraviolet detection: Collaborative study. Collison M. J AOAC Int. 2008 91: 489-500.
  9. Determination of campesterol, stigmasterol, and beta-sitosterol in saw palmetto raw materials and dietary supplements by gas chromatography: Collaborative study. Sorenson WR, Sullivan D. J AOAC Int 2007; 90: 670-8.
  10. Evaluation of a method to determine flavonol aglycones in Ginkgo biloba dietary supplement crude materials and finished products by high-performance liquid chromatography: Collaborative study. Gray D, LeVanseler K, Pan M, Waysek EH. J AOAC Int 2007; 90: 43-53.
  11. Determination of beta-carotene in supplements and raw materials by reversed-phase high pressure liquid chromatography: Collaborative study. Szpylka J, DeVries JW. AOAC Int 2005 Sep-Oct; 88: 1279-91.
  12. Determination of glucosamine in raw materials and dietary supplements containing glucosamine sulfate and/or glucosamine hydrochloride by high-performance liquid chromatography with FMOC-Su derivatization: Collaborative study. Zhou JZ, Waszkuc T, Mohammed F. J AOAC Int 2005; Jul-Aug; 88: 1048-58.
  13. Determination of ephedra alkaloids in urine and plasma by HPLC-UV: Collaborative study. Roman MC. J AOAC Int 2004 Jan-Feb; 87: 15-24.
  14. Determination of ephedrine alkaloids in botanicals and dietary supplements by HPLC-UV: Collaborative study. Roman MC. J AOAC Int 2004 Jan-Feb; 87: 1-14.
  15. Determination of ephedrine alkaloids in dietary supplements and botanicals by liquid chromatography/tandem mass spectrometry: Collaborative study. Trujillo WA, Sorenson WR. J AOAC Int 2003 Jul-Aug; 86: 657-68.
  16. Determination of ephedrine alkaloids in human urine and plasma by liquid chromatography/tandem mass spectrometry: Collaborative study. Trujillo WA, Sorenson WR. J AOAC Int 2003 Jul-Aug; 86: 643-56.

Laboratory Quality Assurance

  1. The development and implementation of quality assurance programs to support nutritional measurements. Sander LC, Bedner M, Duewer DL, Lippa KA, Phillips MM, Phinney KW, Rimmer CA, Schantz MM, Sharpless KE, Tai SS, Thomas JB, Wise SA, Wood LJ, Betz JM, Coates PM. Anal Bioanal Chem. 2013 May;405(13):4437-41.

Methods

  1. Kratom (Mitragyna speciosa) validation: quantitative analysis of indole and oxindole alkaloids reveals chemotypes of plants and products. Manwill PK, Flores-Bocanegra L, Khin M, Raja HA, Cech NB, Oberlies NH, Todd DA. Planta Med. 2022 Aug;88(9-10):838-857.
  2. Recommendations on the measurement and the clinical use of vitamin D metabolites and vitamin D binding protein - A position paper from the IFCC Committee on bone metabolism. Makris K, Bhattoa HP, Cavalier E, Phinney K, Sempos CT, Ulmer CZ, Vasikaran SD, Vesper H, Heijboer AC. Clin Chim Acta. 2021 Jun;517:171-197.
  3. Determination of active vitamin B12 (cobalamin) in dietary supplements and ingredients by reversed-phase liquid chromatography: Single-laboratory validation. Qiu X, Zhang H, Yin Y, Brandes H, Marsala T, Stenerson K, Cramer H, You H. Food Chem. 2019 Nov 15;298:125010.
  4. Determination of bioactive nonvolatile ginger constituents in dietary supplements by a rapid and economic HPLC method: Analytical method development and single-laboratory validation. You H, Ireland B, Moeszinger M, Zhang H, Snow L, Krepich S, Takagawa V. Talanta. 2019 Mar 1;194:795-802.
  5. Approaches by the US National Institutes of Health to support rigorous scientific research on dietary supplements and natural products Kuszak AJ, Hopp DC, Williamson JS, Betz JM, Sorkin BC. Drug Test Anal. 2016 Mar;8(3-4):413-7.
  6. Comparison of three development approaches for Stationary Phase Optimised Selectivity Liquid Chromatography based screening methods Part I: A heterogeneous group of molecules (slimming agents in food supplements) Deconinck E, Ghijs L, Kamugisha A, Courselle P. Talanta. 2016 Feb 1;148:518-28.
  7. External calibration strategy for trace element quantification in botanical samples by LA-ICP-MS using filter paper Nunes MA, Voss M, Corazza G, Flores EM, Dressler VL. Anal Chim Acta. 2016 Jan 28;905:51-7.
  8. Highly sensitive solid forms discrimination on the whole tablet of the active ingredients in quercetin dietary supplements by NMR crystallography approaches. Miclaus MO, Filip X, Filip C, Martin FA, Grosu IG. J Pharm Biomed Anal. 2016 May 30;124:274-80.
  9. The importance of method selection in determining product integrity for nutrition research Mudge EM, Betz JM, Brown PN. Adv Nutr. 2016 Mar 15;7(2):390-8.
  10. Estimation of potential availability of essential oil in some brands of herbal teas and herbal dietary supplements Kowalski R, Baj T, Kowalska G, Pankiewicz U. PLoS One. 2015 Jun 25;10(6):e0130714.
  11. Fast identification of 1,3-dimethylamylamine using direct analysis in real time-QToF-MS Avula B, Smillie TJ, Wang YH, Zweigenbaum J, ElSohly MA, Khan IA. J AOAC Int. 2015 May-Jun;98(3):757-9.
  12. Identification of (antioxidative) plants in herbal pharmaceutical preparations and dietary supplements Deconinck E, Custers D, De Beer JO. Methods Mol Biol. 2015;1208:181-99.
  13. Polyphenols from different agricultural residues: extraction, identification and their antioxidant properties Vijayalaxmi S, Jayalakshmi SK, Sreeramulu K. J Food Sci Technol. 2015 May;52(5):2761-9.
  14. The measurement of antioxidant capacity and polyphenol content in selected food supplements Wasek M, Giebułtowicz J, Sochacka M, Zawada K, Modzelewska W, Krześniak LM, Wroczyński P. Acta Pol Pharm. 2015 Sep-Oct;72(5):877-87.
  15. HPTLC determination of chemical composition variability in raw materials used in botanicals. Toniolo C, Nicoletti M, Maggi F, Venditti A. Nat Prod Res. 2014;28(2):119-26.
  16. Quantitative analysis of Panax ginseng by FT-NIR spectroscopy. Xu XF, Nie LX, Pan LL, Hao B, Yuan SX, Lin RC, Bu HB, Wang D, Dong L, Li XR. J Anal Methods Chem. 2014;2014:741571.
  17. Dehydropyrrolizidine alkaloids, including monoesters with an unusual esterifying acid, from cultivated Crotalaria juncea (Sunn Hemp cv.'Tropic Sun'). Colegate SM, Gardner DR, Joy RJ, Betz JM, Panter KE. J Agric Food Chem. 2012 Apr 11;60(14):3541-50.
  18. Quantitative analysis of ginger components in commercial products using liquid chromatography with electrochemical array detection. Shao X, Lv L, Parks T, Wu H, Ho CT, Sang S. J Agric Food Chem. 2010 Dec 22;58(24):12608-14.
  19. Coenzyme Q10 content in raw materials and dietary supplements.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2008.07
  20. Mass spectrometric determination of the predominant adrenergic protoalkaloids in bitter orange (Citrus aurantium). Nelson BC, Putzbach K, Sharpless KE, Sander LC. J Agric Food Chem 2007 Nov 28; 55: 9769-75.
  21. Ephedrine and pseudoephedrine in botanicals and dietary supplements.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2003.13

Method Development Reports

  1. Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions. Sempos CT, Williams EL, Carter GD, Jones J, Camara JE, Burdette CQ, Hahm G, Nalin F, Duewer DL, Kuszak AJ, Merkel J, Hoofnagle AN, Lukas P, Cavalier É, Durazo-Arvizu RA, Crump PM, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Batista MC, Meadows S, Cox L, Jansen E, Khan DA, Robyak K, Creer MH, Kilbane M, Twomey PJ, Freeman J, Parker N, Yuan J, Fitzgerald R, Mushtaq S, Clarke MW, Breen N, Simpson C, Wise SA. Anal Bioanal Chem. 2022 Jan;414(2):1015-1028.
  2. Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D3 on assay performance. Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Hoofnagle AN, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Meadows S, Cox L, Robyak K, Creer MH, Fitzgerald R, Clarke MW, Breen N, Lukas P, Cavalier É, Sempos CT. Anal Bioanal Chem. 2022 Jan;414(1):333-349.
  3. Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 2 ligand binding assays - impact of 25-hydroxyvitamin D2 and 24R,25-dihydroxyvitamin D3 on assay performance. Wise SA, Camara JE, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Williams EL, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Batista MC, Pham H, Bennett A, Jansen E, Khan DA, Kilbane M, Twomey PJ, Freeman J, Parker N, Mushtaq S, Simpson C, Lukas P, Cavalier É, Sempos CT. Anal Bioanal Chem. 2022 Jan;414(1):351-366.
  4. The influence of proteoforms: assessing the accuracy of total vitamin D-binding protein quantification by proteolysis and LC-MS/MS. Kilpatrick LE, Bouillon R, Davis WC, Henderson CM, Hoofnagle AN, Pauwels S, Vanderschueren D, Waelkens E, Wildiers H, Yen JH, Phinney KW. Clin Chem Lab Med. 2022 Oct 24;61(1):78-85.
  5. Biotin supplementation causes erroneous elevations of results in some commercial serum 25-hydroxyvitamin d (25OHD) assays. Carter GD, Berry J, Cavalier E, Durazo-Arvizu R, Gunter E, Jones G, Jones J, Phinney K, Sempos CT, Twomey PJ, Williams EL. J Steroid Biochem Mol Biol. 2020 Jun;200:105639.
  6. Comparison of phytochemical composition of Ginkgo biloba extracts using a combination of non-targeted and targeted analytical approaches. Collins BJ, Kerns SP, Aillon K, Mueller G, Rider CV, DeRose EF, London RE, Harnly JM, Waidyanatha S. Anal Bioanal Chem. 2020 Oct;412(25):6789-6809.
  7. External quality assessment of 24,25-dihydroxyvitamin D3 (24,25(OH)2D3) assays. Carter GD, Ahmed F, Berry J, Cavalier E, Durazo-Arvizu R, Gunter E, Jones G, Jones J, Phinney K, Sempos CT, Twomey PJ, Williams EL, Wise SA. J Steroid Biochem Mol Biol. 2019 Mar;187:130-133.
  8. Method development for the certification of a ginsenoside calibration solution via liquid chromatography with absorbance and mass spectrometric detection Wilson WB, Sander LC. J Chromatogr A. 2018 Nov 2;1574:114-121.
  9. General steps to standardize the laboratory measurement of serum total 25-hydroxyvitamin D. Sempos CT, Betz JM, Camara JE, Carter GD, Cavalier E, Clarke MW, Dowling KG, Durazo-Arvizu RA, Hoofnagle AN, Liu A, Phinney KW, Sarafin K, Wise SA, Coates PM. J AOAC Int. 2017 Sep 1;100(5):1230-1233.
  10. Comparison of three development approaches for Stationary Phase Optimised Selectivity Liquid Chromatography based screening methods Part II: A group of structural analogues (PDE-5 inhibitors in food supplements) Deconinck E, Ghijs L, Kamugisha A, Courselle P. Talanta. 2016 Feb 1;148:346-55.
  11. Determination of protein content by NIR spectroscopy in protein powder mix products Ingle PD, Christian R, Purohit P, Zarraga V, Handley E, Freel K, Abdo S. J AOAC Int. 2016 Mar-Apr;99(2):360-3.
  12. Development of new reference material neohesperidin for quality control of dietary supplements Gong N, Zhang B, Yang D, Gao Z, Du G, Lu Y. J Sci Food Agric. 2015 Jul;95(9):1885-91.
  13. Evaluation protocol for review of method validation data by the AOAC Stakeholder Panel on Infant Formula and Adult Nutritionals Expert Review Panel Gill BD, Indyk HE, Blake CJ, Konings EJ, Jacobs WA, Sullivan DM. J AOAC Int. 2015 Jan-Feb;98(1):112-5.
  14. Quantitative determination of coenzyme Q10 from dietary supplements by FT-NIR spectroscopy and statistical analysis Rácz A, Vass A, Héberger K, Fodor M. Anal Bioanal Chem. 2015 Apr; 407:2887-98.
  15. Development of botanical and fish oil standard reference materials for fattyacids. Schantz MM, Sander LC, Sharpless KE, Wise SA, Yen JH, NguyenPho A, Betz JM. Anal Bioanal Chem. 2013 May;405(13):4531-8.
  16. Chromatographic fingerprint analysis of yohimbe bark and related dietary supplements using UHPLC/UV/MS. Sun J, Chen P. J Pharm Biomed Anal 2012 Mar 5; 61: 142-9.
  17. Quantitation of flavanols, proanthocyanidins, isoflavones, flavanones, dihydrochalcones, stilbenes, benzoic acid derivatives using ultraviolet absorbance after identification by liquid chromatography-mass spectrometry.external link disclaimer Lin LZ, Harnly JM. J Agric Food Chem 2012; 60: 5832-40.
  18. Quantitation of the hydroxycinnamic acid derivatives and the glycosides of flavonols and flavones by UV absorbance after identification by LC-MS.external link disclaimer Lin LZ, Harnly J, Zhang RW, Fan XE, Chen HJ. J Agric Food Chem 2012; 60: 544-53.
  19. “Dilute-and-shoot" triple parallel mass spectrometry method for analysis of vitamin D and triacylglycerols in dietary supplements. Byrdwell WC. Anal Bioanal Chem 2011; 401: 3317-34.
  20. Isotope dilution liquid chromatography - mass spectrometry methods for fat- and water-soluble vitamins in nutritional formulations. Phinney KW, Rimmer CA, Thomas JB, Sander LC, Sharpless KE, Wise SA. Anal Chem 2011; 83: 92-8.
  21. UHPLC/HRMS/MSn analysis of anthocyanins, flavonol glycosides and other polyphenols in red mustard green (Brassica juncea Coss variety). Lin LZ, Sun J, Chen P, Harnly JM. J Agri Food Chem 2011; 59: 12059-72.
  22. Variance in the chemical composition of dry beans determined from UV spectral fingerprints.external link disclaimer Harnly JM, Pastor-Corrales MS, Luthria DL. J Ag Food Chem 2009; 57: 8705-10.
  23. Analysis of flavonol aglycones and terpenelactones in ginkgo biloba extract: A comparison of high-performance thin-layer chromatography and column high-performance liquid chromatography. Gray DE, Messer D, Porter A, Hefner B, Logan D, Harris RK, Clark AP, Algaier JA, Overstreet JD, Smith CS. J AOAC Int 2007; 90: 1203-9.
  24. LC/UV/MS-MRM for the simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements. Chen P, Wolf WR. Anal Bioanal Chem 2007; 387: 2441-8.

NIST Dietary Supplement Laboratory Quality Assurance Program

  1. Determination of curcuminoids in turmeric dietary supplements by HPLC-DAD: Multi-laboratory study through the NIH-ODS/NIST Quality Assurance program Mudge EM, Brown PN, Rimmer CA, Phillips MM. J AOAC Int. 2020 Nov 1;103(6):1625-1632.
  2. Dietary supplement laboratory quality assurance program: The first five exercises. Phillips MM, Rimmer CA, Wood LJ, Lippa KA, Sharpless KE, Duewer DL, Sander LC, Betz JM. AOAC Int 2011; 94: 803-14.

NIST Reference Materials Reports

  1. Development of an improved standard reference material for folate vitamers in human serum. Camara JE, Pritchett JS, Daniels YC, Bedner M, Nelson MA, Lowenthal MS, Fazili Z, Pfeiffer CM, Phinney KW, Sharpless KE, Sander LC, Lippa KA, Yen JH, Kuszak AJ, Wise SA. Anal Bioanal Chem. 2023 Feb;415(5):809-821.
  2. Development of kudzu (Pueraria Montana var. lobata) reference materials for the determination of isoflavones and toxic elements Lippert JA, Rimmer CA, Phillips MM, Nelson MA, Barber CA, Wood LJ, Long SE, Bryan CE, Sharpless KE, Yen J, Kuszak AJ, Wise SA. J AOAC Int. 2022 Jun 29;105(4):1162-1174.
  3. Method development for the determination of seven ginsenosides in three Panax ginseng reference materials via liquid chromatography with tandem mass spectrometry. Hayes HV, Wilson WB, Rimmer CA. Anal Bioanal Chem. 2022 Dec;414(29-30):8215-8222.
  4. Assessment of serum total 25-hydroxyvitamin D assay commutability of Standard Reference Materials and College of American Pathologists Accuracy-Based Vitamin D (ABVD) Scheme and Vitamin D External Quality Assessment Scheme (DEQAS) materials: Vitamin D Standardization Program (VDSP) Commutability Study 2 Camara JE, Wise SA, Hoofnagle AN, Williams EL, Carter GD, Jones J, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Lukas P, Cavalier É, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Batista MC, Pham H, Bennett A, Meadows S, Cox L, Jansen E, Khan DA, Robyak K, Creer MH, Kilbane M, Twomey PJ, Freeman J, Parker N, Yuan J, Fitzgerald R, Mushtaq S, Clarke MW, Breen N, Simpson C, Sempos CT. Anal Bioanal Chem. 2021 Aug;413(20):5067-5084.
  5. Assessing a method and reference material for quantification of vitamin D binding protein during pregnancy Kilpatrick LE, Boggs ASP, Davis WC, Long SE, Yen JH, Phinney KW. Clin Mass Spectrom. 2020 Jan 23;16:11-17.
  6. Development of a pregnancy-specific reference material for thyroid biomarkers, vitamin D, and nutritional trace elements in serum Boggs ASP, Kilpatrick LE, Burdette CQ, Tevis DS, Fultz ZA, Nelson MA, Jarrett JM, Kemp JV, Singh RJ, Grebe SKG, Wise SA, Kassim BL, Long SE. Clin Chem Lab Med. 2020 Oct 26;59(4):671-679.
  7. Evolution of reference materials for the determination of organic nutrients in food and dietary supplements-a critical review. Wise SA, Phillips MM. Anal Bioanal Chem. 2019 Jan;411(1):97-127.
  8. Development of a kelp powder (Thallus laminariae) Standard Reference Material. Yu LL, Browning JF, Burdette CQ, Caceres GC, Chieh KD, Davis WC, Kassim BL, Long SE, Murphy KE, Oflaz R, Paul RL, Sharpless KE, Wood LJ, Yen JH, Zeisler R. Anal Bioanal Chem. 2018 Feb;410(4):1265-1278.
  9. Method development for the certification of a ginsenoside calibration solution via liquid chromatography with absorbance and mass spectrometric detection. Wilson WB, Sander LC. J Chromatogr A. 2018 Nov 2;1574:114-121.
  10. Standard Reference Material (SRM) 2378 fatty acids in frozen human serum. Certification of a clinical SRM based on endogenous supplementation of polyunsaturated fatty acids. Benner BA Jr, Schantz MM, Powers CD, Schleicher RL, Camara JE, Sharpless KE, Yen JH, Sniegoski LT. Anal Bioanal Chem. 2018 Mar;410(9):2321-2329.
  11. Development of an Improved Standard Reference Material for Vitamin D Metabolites in Human Serum. Phinney KW, Tai SS, Bedner M, Camara JE, Chia RRC, Sander LC, Sharpless KE, Wise SA, Yen JH, Schleicher RL, Chaudhary-Webb M, Maw KL, Rahmani Y, Betz JM, Merkel J, Sempos CT, Coates PM, Durazo-Arvizu RA, Sarafin K, Brooks SPJ. Anal Chem. 2017 May 2;89(9):4907-4913.
  12. Development of an improved standard reference material for vitamin D metabolites in human serum. Phinney KW, Tai SS, Bedner M, Camara JE, Chia RRC, Sander LC, Sharpless KE, Wise SA, Yen JH, Schleicher RL, Chaudhary-Webb M, Maw KL, Rahmani Y, Betz JM, Merkel J, Sempos CT, Coates PM, Durazo-Arvizu RA, Sarafin K, Brooks SPJ. Anal Chem. 2017 May 2;89(9):4907-4913.
  13. Development of Standard Reference Material (SRM) 2973 Vitamin D Metabolites in Frozen Human Serum (High Level). Tai SS, Nelson MA, Bedner M, Lang BE, Phinney KW, Sander LC, Yen JH, Betz JM, Sempos CT, Wise SA. J AOAC Int. 2017 Sep 1;100(5):1294-1303.
  14. Liquid chromatography with absorbance detection and with isotope-dilution mass spectrometry for determination of isoflavones in soy standard reference materials Phillips MM, Bedner M, Reitz M, Burdette CQ, Nelson MA, Yen JH, Sander LC, Rimmer CA. Anal Bioanal Chem. 2017 Feb;409(4):949-960.
  15. Liquid chromatography with absorbance detection and with isotope-dilution mass spectrometry for determination of isoflavones in soy standard reference materials. Phillips MM, Bedner M, Reitz M, Burdette CQ, Nelson MA, Yen JH, Sander LC, Rimmer CA. Anal Bioanal Chem. 2017 Feb;409(4):949-960.
  16. Technical Note: Determination of Cholecalciferol (Vitamin D₃) in Standard Reference Material 3532 Calcium-Containing Solid Oral Dosage Form Burdette CQ. J AOAC Int. 2017 Sep 1;100(5):1304-1307.
  17. Technical Note: Determination of Cholecalciferol (Vitamin D₃) in Standard Reference Material 3532 Calcium-Containing Solid Oral Dosage Form. Burdette CQ. J AOAC Int. 2017 Sep 1;100(5):1304-1307.
  18. Determination of isoflavone content in SRM 3238 using liquid chromatography-particle beam/electron Ionization Mass Spectrometry Zhang LX, Burdette CQ, Phillips MM, Rimmer CA, Marcus RK. J AOAC Int. 2015 Nov-Dec;98(6):1483-90.
  19. Determination of isoflavone content in SRM 3238 using liquid chromatography-particle beam/electron ionization mass spectrometry Zhang LX, Burdette CQ, Phillips MM, Rimmer CA, Marcus RK. J AOAC Int. 2015 Nov-Dec;98(6):1483-90.
  20. A simple and sensitive LC-ICP-MS method for the accurate determination of vitamin B12 in fortified breakfast cereals and multivitamin tabletsexternal link disclaimer Raju CSK, Yu LL, Schiel JE, Long SE J Anal At Spectrom 2013; 28:901-907
  21. Certification of elements in and use of standard reference material 3280 multivitamin/multielement tablets. Turk GC, Sharpless KE, Cleveland D, Jongsma C, Mackey EA, Marlow AF, Oflaz R, Paul RL, Sieber JR, Thompson RQ, Wood LJ, Yu LL, Zeisler R, Wise SA, Yen JH, Christopher SJ, Day RD, Long SE, Greene E, Harnly J, Ho IP, Betz JM. J AOAC Int. 2013 Nov-Dec;96(6):1281-7.
  22. Characterizing Vaccinium berry Standard Reference Materials by GC-MS using NIST spectral libraries. Lowenthal MS, Andriamaharavo NR, Stein SE, Phinney KW. Anal Bioanal Chem. 2013 May;405(13):4467-76.
  23. Determination of fortified and endogenous folates in food-based Standard Reference Materials by liquid chromatography-tandem mass spectrometry. Camara JE, Lowenthal MS, Phinney KW. Anal Bioanal Chem. 2013 May;405(13):4561-8
  24. Determination of isoflavone content in soy, red clover, and kudzu dietary supplement materials by liquid chromatography-particle beam/electron ionization mass spectrometry. Burdette CQ, Marcus RK. J AOAC Int. 2013 Sep-Oct;96(5):925-32.
  25. Determination of trace level cadmium in SRM 3280 Multivitamin/Multielement Tablets via isotope dilution inductively coupled plasma mass spectrometry. Christopher SJ, Thompson RQ. Talanta. 2013 Nov 15;116:18-25.
  26. Developing qualitative LC-MS methods for characterization of Vaccinium berry Standard Reference Materials. Lowenthal MS, Phillips MM, Rimmer CA, Rudnick PA, Simón-Manso Y, Stein SE, Tchekhovskoi D, Phinney KW. Anal Bioanal Chem. 2013 May;405(13):4451-65.
  27. Development of botanical and fish oil standard reference materials for fatty acids. Schantz MM, Sander LC, Sharpless KE, Wise SA, Yen JH, NguyenPho A, Betz JM. Anal Bioanal Chem. 2013 May;405(13):4531-8.
  28. Standard reference materials for dietary supplement analysis. Rimmer CA, Sharpless KE, Wise SA, Betz JM, Coates PM. Anal Bioanal Chem. 2013 May;405(13):4337-44.
  29. Standard reference materials for food analysis. Phillips MM, Sharpless KE, Wise SA. Anal Bioanal Chem. 2013 May;405(13):4325-35.
  30. Development and certification of a standard reference material for vitamin D metabolites in human serum. Phinney KW, Bedner M, Tai SS, Vamathevan VV, Sander LC, Sharpless KE, Wise SA, Yen JH, Schleicher RL, Chaudhary-Webb M, Pfeiffer CM, Betz JM, Coates PM, Picciano MF. Anal Chem 2012; 84: 956-62.
  31. Development and certification of green tea-containing standard reference materials. Sander LC, Bedner M, Tims MC, Yen JH, Duewer DL, Porter B, Christopher SJ, Day RD, Long SE, Molloy JL, Murphy KE, Lang BE, Lieberman R, Wood LJ, Payne MJ, Roman MC, Betz JM, NguyenPho A, Sharpless KE, Wise SA Anal Bioanal Chem 2012; 402: 473-87.
  32. A dynamic calibration approach for determining catechins and gallic acid in green tea using LC-ESI/MS. Bedner M, Duewer DL. Anal Chem 2011; 83: 6169-76.
  33. Application of ultra-performance liquid chromatography/tandem mass spectrometry for the measurement of vitamin D in foods and nutritional supplements. Huang M, Winters D. J AOAC Int 2011; 94: 211-23.
  34. Certification of vitamins and carotenoids in SRM 3280 multivitamin/multielement tablets. Sander LC, Sharpless KE, Wise SA, Nelson BC, Phinney KW, Porter BJ, Rimmer CA, Thomas JB, Wood LJ, Yen JH, Duewer DL, Atkinson R, Chen P, Goldschmidt R, Wolf WR, Ho IP, Betz JM. Anal Chem 2011; 83: 99-108.
  35. Characterization of three berry standard reference materials for nutrients. Wood LJ, Sharpless KE, Pichon M, Porter BJ, Yen JH, Ehling S. J Agric Food Chem 2011; 59: 7246-52.
  36. Determination of fat-soluble vitamins and carotenoids in standard reference material 3280 multivitamin/multielement tablets by liquid chromatography with absorbance detection. Thomas JB, Sharpless KE, Yen JH, Rimmer CA. J AOAC Int 2011; 94: 815-22.
  37. Isotope dilution liquid chromatography - mass spectrometry methods for fat- and water-soluble vitamins in nutritional formulations. Phinney KW, Rimmer CA, Thomas JB, Sander LC, Sharpless KE, Wise SA. Anal Chem 2011; 83: 92-8.
  38. An LC-ESI/MS method for determining theanine in green tea dietary supplements. Bedner M, Sander LC, Sharpless KE. Anal. Bioanal. Chem 2010; 397: 1773–7.
  39. Determination of organic acids in Vaccinium berry standard reference materials. Phillips MM, Case RJ, Rimmer CA, Sander SA, Sharpless KE, Wise SA, Yen JH. Anal Bioanal Chem 2010; 398: 425-34.
  40. Preparation and characterization of Standard Reference Material 1849 Infant/Adult Nutritional Formula. Sharpless KE, Lindstrom RM, Nelson BC, Phinney KW, Thomas JB, Turk GC, Wise SA, Wood LJ, Yen JH J AOAC Intl 2010; 93: 1262-74.
  41. Dietary supplement standard reference materials.external link disclaimer Sander LC, Phinney KW, Schantz MM, Sharpless KE, Wise SA. American Laboratory 2009 Oct; 41: 32-7.
  42. Standard reference materials to support measurement of fatty acids. Sander L, Schantz M, Sharpless K, Wise S Lipid Technology 2009; 21:7-12.
  43. Analytical challenges in the certification of botanical dietary supplement standard reference materials. external link disclaimer Rimmer CA, Sander LC, Sharpless KE, Wise SA. Planta Med 2008; 74: S22.
  44. Certification of standard reference materials containing bitter orange. Sander LC, Putzbach K, Nelson BC, Rimmer CA, Bedner M, Thomas JB, Porter BJ, Wood LJ, Schantz MM, Murphy KE, Sharpless KE, Wise SA, Yen JH, Siitonen PH, Evans RL, Nguyen Pho A, Roman MC, Betz JM. Anal Bioanal Chem 2008; 391: 2023-34.
  45. Determination of para-synephrine and meta-synephrine positional isomers in bitter orange-containing dietary supplements by LC/UV and LC/MS/MS.external link disclaimer Santana J, Sharpless KE, Nelson BC. Food Chem 2008; 109: 675-82.
  46. Development of a standard reference material for vitamin D in serum.external link disclaimer Phinney KW. Am J Clin Nutr 2008; 88: 511S-12S.
  47. Development of liquid chromatographic methods for the determination of phytosterols in standard reference materials containing saw palmetto. Bedner M, Schantz MM, Sander LC, Sharpless KE J Chromatogr A 2008; 1192: 74-80.
  48. Development of saw palmetto (Serenoa repens) fruit and extract standard reference materials. Schantz MM, Bedner M, Murphy KE, Porter BJ, Putzbach K, Rimmer CA, Sander LC, Sharpless, KE, Thomas JB, Wise SA, Wood LJ, Yen JH, Yarita T, NguyenPho A, Sorenson WR, Betz JM. Anal Bioanal Chem 2008; 392: 427-38.
  49. Standard reference materials for analysis of dietary supplements. Sharpless KE, Duewer DL. J AOAC Int 2008; 91: 1298-1302.
  50. Characterization of a suite of ginkgo-containing standard reference materials. Rimmer CA, Howerton SB, Sharpless KE, Sander LC, Long SE, Murphy KE, Porter BJ, Putzbach K, Rearick MS, Wise SA, Wood LJ, Zeisler R, Hancock DK, Yen JH, Betz JM. NguyenPho A, Yang L, Scriver C, Willie S, Sturgeon R, Schaneberg B, Nelson C, Skamarack J, Pa Anal Bioanal Chem 2007; 389: 179-96.
  51. Contents of selected B vitamins in NIST SRM 3280 multivitamin/multielement tablets by liquid chromatography isotope dilution mass spectrometry. Chen P, Ozcan M, Wolf WR. Anal Bioanal Chem 2007; 389: 343-7.
  52. Determination of bitter orange alkaloids in dietary supplement standard reference materials by liquid chromatography with atmospheric-pressure ionization mass spectrometry. Putzbach K, Rimmer CA, Sharpless KE, Wise SA, Sander LC. Anal Bioanal Chem 2007; 389: 197-205.
  53. Determination of bitter orange alkaloids in dietary supplements standard reference materials by liquid chromatography with ultraviolet absorbance and fluorescence detection. Putzbach K, Rimmer CA, Sharpless KE, Sander LC. J Chromatogr A 2007; 1156: 304-11.
  54. Determination of caffeine and caffeine-related metabolites in Ephedra-containing standard reference materials using liquid chromatography with absorbance detection and tandem mass spectrometry. Thomas JB, Sharpless KE, Mitvalsky S, Roman M, Yen JH, Satterfield MB. J AOAC Intl 2007; 90: 934-40.
  55. Mass spectrometric determination of the predominant adrenergic protoalkaloids in bitter orange (Citrus aurantium). Nelson BC, Putzbach K, Sharpless KE, Sander LC. J Agric Food Chem 2007; 55: 9769-75.
  56. On the certification ofcadmium at trace and ultra-trace levels in standard reference materials using ID ICP-MS. Murphy KE, Long SE, Vocke RD. Anal Bioanal Chem 2007; 387: 2453-61.
  57. Preparation and characterization of Standard Reference Material 3276 carrot extract in oil. Sharpless KE, Thomas JB, Duewer DL, Putzbach K, Rimmer CA, Sander LC, Schantz MM, Wise SA, Yarita T, Yen JH. Anal Bioanal Chem 2007; 389: 207-17.
  58. Standard reference materials for foods and dietary supplements. Sharpless KE, Thomas JB, Christopher SJ, Greenberg RR, Sander LC, Schantz MM, Welch MJ, Wise SA Anal Bioanal Chem 2007; 389: 171-8.
  59. Dietary supplement standard reference materials. Sander LC, Sharpless KE, Wise SA. Life Sci. 2006 78(18):2044-2048
  60. Improved liquid chromatography methods for the separation and quantification of biotin in NIST Standard Reference Material 3280: multivitamin/multielement tablets. Nelson BC, Sharpless KE, Sander LC. J Agric Food Chem 2006; 54: 8710-16.
  61. Preparation and characterization of a suite of ephedra-containing standard reference materials. Sharpless KE, Anderson D L, Betz J M, Butler TA, Capar SG, Cheng J, Fraser C, Gay M, Gardner G, Howell D, Ihara T, Lam J, Long S, McCooeye M, Mackey EA, Mindak W, Mitvalsky S, Murphy K, Phinney KW, NguyenPho A, Porter BJ, Roman M, Sander LC, Satterfield M J AOAC Int 2006; 89: 1483-95.
  62. Quantitative determination of folic acid in multivitamin/multielement tablets using liquid chromatography/tandem mass spectrometry. Nelson BC, Sharpless KE, Sander LC. J Chromatogr A 2006; 1135: 203-11.
  63. Determination of ephedra alkaloid stereoisomers in dietary supplements by capillary electrophoresis. Phinney KW, Ihara T, Sander LC. J Chromatogr 2005; 1077: 90-7.
  64. Determination of ephedrine alkaloids in dietary supplement standard reference materials. Sander LC, Sharpless KE, Satterfield MB, Ihara T, Phinney KW, Porter BJ, Yen JH, Wise SA, Gay ML, Lam JW, McCooeye M, Gardner G, Fraser C, Sturgeon R. Anal Chem 2005; 77: 3101-12.

Official Method of Analysis (OMA) Methods

  1. Immunoglobulin G in bovine colostrum and milk powders, and in dietary supplements of bovine origin.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2010.01
  2. Lycopene in dietary supplements and raw materials.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2009.04
  3. Aconitum alkaloids in dietary supplements and raw botanical materials.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2008.11
  4. Aflatoxins B1, B2, G1 and G2 and Ochratoxin A in ginseng and ginger.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2008.02
  5. Hydrastine and berberine in goldenseal raw materials, extracts, and dietary supplements.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2008.04
  6. Total soy isoflavones in dietary supplements, supplement ingredients, and soy foods.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2008.03
  7. Aristolochic acid I in botanicals and dietary supplements potentially contaminated with Aristolochic acid I.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2007.05
  8. Campesterol, stigmasterol, and beta-sitosterol in saw palmetto raw materials and dietary supplements.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2007.03
  9. Flavonol aglycones in ginkgo biloba dietary supplement crude materials and finished products.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2006.07
  10. B-carotene in supplements and raw materials.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2005.07
  11. Glucosamine in raw materials and dietary supplements containing glucosamine sulfate and/or glucosamine hydrochloride.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2005.01
  12. Ephedrine alkaloids in human urine and plasma.external link disclaimer AOAC INTERNATIONAL Official Methods of Analysis of AOAC INTERNATIONAL (2012) 19th Ed., Gaithersburg, MD: AOAC INTERNATIONAL, AOAC Method Number: 2003.10

Single-Laboratory Validation (SLV) Reports

  1. Optimization and validation of a multiresidue method for screening of 126 pesticide residues in herbal raw materials and extracts used as ingredients in Ayurvedic medicines and dietary supplements. Koshy R, Yadav S, Rajeshkumar R, Singh VK, Setty MM, Murali B, Agarwal A. J AOAC Int. 2022 Apr 27;105(3):748-758.
  2. Quantitation of select terpenes/terpenoids and nicotine using gas chromatography–mass spectrometry with high-temperature headspace samplingexternal link disclaimer Nguyen TD, Riordan-Short S, Dang TT, O’Brien R, Noestheden M. ACS Omega 2020 Mar 2 [Epub ahead of print]
  3. Single laboratory validation of UHPLC-MS/MS assays for red clover isoflavones in human serum and dietary supplementsexternal link disclaimer Muchiri RN, van Breemen RB. J AOAC Int. 2020 Mar 4 [Epub ahead of print]
  4. Determination of select nonvolatile ginger constituents in dietary ingredients and finished dosage forms, first action 2018.04. You H, Ireland B, Moeszinger M, Zhang H, Snow L, Krepich S, Takagawa V. J AOAC Int. 2019 Sep 20.
  5. Quantitation of aloe vera polysaccharides by O-acetyl and UV-Vis spectrophotometry: First action 2018.14. Metcalfe C. J AOAC Int. 2019 Jul 1;102(4):1091-1094.
  6. A stable isotope dilution tandem mass spectrometry method of major kavalactones and its applications. Wang Y, Eans SO, Stacy HM, Narayanapillai SC, Sharma A, Fujioka N, Haddad L, McLaughlin J, Avery BA, Xing C. PLoS One. 2018 May 24;13(5):e0197940.
  7. Development and validation of an ultra-high performance liquid chromatography/triple quadrupole mass spectrometry method for analyzing microbial-derived grape polyphenol metabolites Zhao D, Yuan B, Carry E, Pasinetti GM, Ho L, Faith J, Mogno I, Simon J, Wu Q. J Chromatogr B Analyt Technol Biomed Life Sci. 2018 Nov 1;1099:34-45.
  8. An LC/MS/MS method for quantitation of chemopreventive sphingadienes in food products and biological samples. Suh JH, Makarova AM, Gomez JM, Paul LA, Saba JD. J Chromatogr B Analyt Technol Biomed Life Sci. 2017 Sep 1;1061-1062:292-299.
  9. A validated UHPLC-tandem mass spectrometry method for quantitative analysis of flavonolignans in milk thistle (Silybum marianum) extracts. Graf TN, Cech NB, Polyak SJ, Oberlies NH. J Pharm Biomed Anal. 2016 Jul 15;126:26-33.
  10. Determination of chondroitin sulfate content in raw materials and dietary supplements by high-performance liquid chromatography with UV detection after enzymatic hydrolysis: single-laboratory validation first action 2015.11 Brunelle SL. J AOAC Int. 2016 Jan-Feb;99(1):53-4.
  11. Method Development and Validation of Vitamin D2 and Vitamin D3 Using Mass Spectrometry external link disclaimer Riley DV. (Master’s Thesis)
  12. Determination of yohimbine in yohimbe bark and related dietary supplements using UHPLC-UV/MS: single-laboratory validation Chen P, Bryden N. J AOAC Int. 2015 Jul-Aug;98(4):896-901.
  13. Optimization and single-laboratory validation of a method for the determination of flavonolignans in milk thistle seeds by high-performance liquid chromatography with ultraviolet detection. Mudge E, Paley L, Schieber A, Brown PN Anal Bioanal Chem. 2015 Oct;407:7657-66.
  14. Optimization and single-laboratory validation of a method for the determination of flavonolignans in milk thistle seeds by high-performance liquid chromatography with ultraviolet detection. Mudge E, Paley L, Schieber A, Brown PN. Anal Bioanal Chem. 2015 Oct;407(25):7657-66.
  15. Quantification of pyrrolizidine alkaloids in North American plants and honey by LC-MS: single laboratory validation Mudge EM, Jones AM, Brown PN. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015 Oct 20:1-7. [Epub ahead of print]
  16. Synthesis and quantitative analysis of plasma-targeted metabolites of catechin and epicatechin. Blount JW, Redan BW, Ferruzzi MG, Reuhs BL, Cooper BR, Harwood JS, Shulaev V, Pasinetti G, Dixon RA. J Agric Food Chem. 2015 Mar 4;63(8):2233-40.
  17. Determination of aloin A and aloin B in aloe vera raw materials and finished products by high-performance liquid chromatography: single-laboratory validation Brown PN, Yu R, Kuan CH, Finley J, Mudge EM, Dentali S. J AOAC Int. 2014 Sep-Oct;97(5):1323-8.
  18. Determination of folate in infant formula and adult/pediatric nutritional formula by ultra-high performance liquid chromatography-tandem mass spectrometry: First Action 2013.13. Meisser-Redeuil K, Bénet S, Gimenez C, Campos-Giménez E, Maria N. J AOAC Int. 2014 Jul-Aug;97(4):1121-6.
  19. Single-laboratory validation of a method for the determination of vitamin D3 in dietary supplements by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Lam VK, Hung RC, Wong EL, Fok JY, Wong YC. J AOAC Int. 2014 Mar-Apr;97(2):403-8.
  20. Determination of catechins and caffeine in camillia sinensis raw materials, extracts, and dietary supplements by HPLC-uv: single-laboratory validation. Roman MC J AOAC Int. 2013 Sep-Oct;96(5):933-41.
  21. Total serum fatty acid analysis by GC-MS: assay validation and serum sample stability. Ren J, Mozurkewich EL, Sen A, Vahratian AM, Ferreri TG, Morse AN, Djuric, Z. Curr Pharm Anal. 2013;9(4):331-339.
  22. Method development and validation for ultra-high-pressure LC/MS/MS determination of hop prenylflavonoids in human serum. Yuan Y, Qiu X, Nikolic D, Dahl JH, van Breemen RB. J AOAC Int. 2012 Nov-Dec;95(6):1744-9.
  23. Determination of anthocyanins in cranberry fruit and cranberry fruit products by high-performance liquid chromatography with ultraviolet detection: Single-laboratory validation. Brown P, Shipley, PR. J AOAC Int 2011; 94: 459-66.
  24. Determination of ginsenoside content in Asian and North American ginseng raw materials and finished products by high-performance liquid chromatography: single-laboratory validation. Brown PN. J AOAC Int. 2011 Sep-Oct;94(5):1391-9.
  25. Determination of major phenolic compounds in Echinacea spp. raw materials and finished products by high-performance liquid chromatography with ultraviolet detection: Single-laboratory validation matrix extension. Brown P, Chan M, Paley L, Betz JM. J AOAC Int 2011; 94: 1400-10.
  26. Optimization and single-laboratory validation study of a high-performance liquid chromatography (HPLC) method for the determination of phenolic Echinacea constituents. Brown PN, Chan M, Betz JM. Anal Bioanal Chem 2010; 397: 1883-92.
  27. Single-laboratory validation of a high-performance liquid chromatographic-diode array detector-fluorescence detector/mass spectrometric method for simultaneous determination of water-soluble vitamins in multivitamin dietary tablets. Chen P, Atkinson R, Wolf WR. J AOAC Int 2009; 92: 680-7.
  28. Single-laboratory validation of a method for the determination of c-phycocyanin and allophycocyanin in Spirulina (Arthrospira) supplements and raw materials by spectrophotometry. Yoshikawa N, Belay A. J AOAC Int 2008 91(3): 524-529
  29. Determination of chondroitin sulfate content in raw materials and dietary supplements by high-performance liquid chromatography with ultraviolet detection after enzymatic hydrolysis: Single-laboratory validation. Ji D, Roman M, Zhou J, Hildreth J. J AOAC 2007; 90: 659-69.
  30. Determination of synephrine in bitter orange raw materials, extracts, and dietary supplements by liquid chromatography with ultraviolet detection: Single-laboratory validation. Roman MC, Betz JM, Hildreth J. J AOAC Int 2007; 90: 68-81.
  31. Determination of ubidecarenone (coenzyme Q10, ubiquinol-10) in raw materials and dietary supplements by high-performance liquid chromatography with ultraviolet detection: Single-laboratory validation. Orozco D, Skamarack J, Reins K, Titlow B, Lunetta S, Li F, Roman M. J AOAC Int 2007; 90: 1227-36.
  32. Single-laboratory validation for the determination of terpene lactones in ginkgo biloba dietary supplement crude materials and finished products by high-performance liquid chromatography with evaporative light-scattering detection. Croom E, Pace R, Paletti A, Sardone N, Gray D. J AOAC Int 2007; 90: 647-58.
  33. Determination of campesterol, stigmasterol, and beta-sitosterol in saw palmetto raw materials and dietary supplements by gas chromatography: Single-laboratory validation. Sorenson W, Sullivan D. J AOAC Int 2006; 89: 22-34.
  34. Determination of flavonol aglycones in ginkgo biloba dietary supplement crude materials and finished products by high-performance liquid chromatography: Single laboratory validation. Gray D, LeVanseler K, Pan M. J AOAC Int 2005; 88: 692-702. Erratum in: J AOAC Int 2006; 89: 41A.
  35. Method for the determination of Aconitum alkaloids in dietary supplements and raw materials by reversed-phase liquid chromatography with ultraviolet detection and confirmation by tandem mass spectrometry: Single-laboratory validation. Tang WT, Wong SK, Law TY, Pang KC, Sin D, Tam YK. J AOAC Int 2006; 89: 1496-514.