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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 D(3) 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. 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
An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays used for the determination of serum total 25-hydroxyvitamin D (25(OH) …
An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid …
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. 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.
A set of 50 single-donor serum samples were assigned target values for 25-hydroxyvitamin D(2) [25(OH)D(2)] and 25-hydroxyvitamin D(3) [25(OH)D(3)] using reference measurement procedures (RMPs). ...Using the test assay results for total serum 25(OH)D …
A set of 50 single-donor serum samples were assigned target values for 25-hydroxyvitamin D(2) [25(OH)D(2)] and 25-hydroxyvitam …
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. 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
The Vitamin D External Quality Assessment Scheme (DEQAS) distributes human serum samples four times per year to over 1000 participants worldwide for the determination of total serum 25-hydroxyvitamin D [25(OH)D)]. ...Even though assay results have been shown …
The Vitamin D External Quality Assessment Scheme (DEQAS) distributes human serum samples four times per year to over 1000 participant …