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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. Sempos CT, et al. Among authors: williams el. Anal Bioanal Chem. 2022 Jan;414(2):1015-1028. doi: 10.1007/s00216-021-03742-5. Epub 2021 Nov 9. Anal Bioanal Chem. 2022. PMID: 34750644
Hydroxyvitamin D assays: An historical perspective from DEQAS.
Carter GD, Berry J, Durazo-Arvizu R, Gunter E, Jones G, Jones J, Makin HLJ, Pattni P, Sempos CT, Twomey P, Williams EL, Wise SA. Carter GD, et al. Among authors: williams el. J Steroid Biochem Mol Biol. 2018 Mar;177:30-35. doi: 10.1016/j.jsbmb.2017.07.018. Epub 2017 Jul 20. J Steroid Biochem Mol Biol. 2018. PMID: 28734989 Review.
Interlaboratory Comparison for the Determination of 24,25-Dihydroxyvitamin D₃ in Human Serum Using Liquid Chromatography with Tandem Mass Spectrometry.
Wise SA, Tai SS, Nelson MA, Burdette CQ, Camara JE, Hoofnagle AN, Laha TJ, Carter GD, Jones J, Williams EL, Barclay ZJ, Jones G, Kaufmann M, Binkley N, Kapoor A, Ziegler T, Cashman KD, Dowling KG, Sempos CT. Wise SA, et al. Among authors: williams el. J AOAC Int. 2017 Sep 1;100(5):1308-1317. doi: 10.5740/jaoacint.17-0183. Epub 2017 Jul 24. J AOAC Int. 2017. PMID: 28741469
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. Carter GD, et al. Among authors: williams el. J Steroid Biochem Mol Biol. 2019 Mar;187:130-133. doi: 10.1016/j.jsbmb.2018.11.010. Epub 2018 Nov 23. J Steroid Biochem Mol Biol. 2019. PMID: 30476591
Estimating uncertainty of target values for DEQAS serum materials.
Durazo-Arvizu RA, Ahmed F, Berry J, Cavalier E, Gunter E, Jones G, Jones J, Sempos CT, Twomey PJ, Williams EL, Carter GD. Durazo-Arvizu RA, et al. Among authors: williams el. J Steroid Biochem Mol Biol. 2019 Apr;188:90-94. doi: 10.1016/j.jsbmb.2018.12.011. Epub 2019 Jan 9. J Steroid Biochem Mol Biol. 2019. PMID: 30639316 Free PMC article.
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. Camara JE, et al. Among authors: williams el. Anal Bioanal Chem. 2021 Aug;413(20):5067-5084. doi: 10.1007/s00216-021-03470-w. Epub 2021 Jun 28. Anal Bioanal Chem. 2021. PMID: 34184102 Free PMC article.
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. Wise SA, et al. Among authors: williams el. Anal Bioanal Chem. 2022 Jan;414(1):333-349. doi: 10.1007/s00216-021-03576-1. Epub 2021 Aug 25. Anal Bioanal Chem. 2022. PMID: 34432104
195 results