Article (Scientific journals)
Vitamin D Standardization Program (VDSP) Intralaboratory Study for the Assessment of 25-Hydroxyvitamin D Assay Variability and Bias.
Wise, Stephen A.; Camara, Johanna E.; Sempos, Christopher T. et al.
2021In The Journal of steroid biochemistry and molecular biology, 212, p. 105917
Peer reviewed
 

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Keywords :
25-hydroxyvitamin D(2); 25-hydroxyvitamin D(3); 3-epi-25hydroxyvitamin D(3); Vitamin D Standardization Program (VDSP); immunoassay; liquid chromatography – tandem mass spectrometry (LCMS/MS); reference measurement procedure (RMP); serum total 25-hydroxyvitamin D
Abstract :
[en] An intralaboratory study assessing assay variability and bias for determination of serum total 25-hydroxyvitamin D [25(OH)D] was conducted by the Vitamin D Standardization Program (VDSP). Thirteen assays for serum total 25(OH)D were evaluated in a single laboratory including 11 unique immunoassays and one liquid chromatography - tandem mass spectrometry (LC-MS/MS) assay. Fifty single-donor serum samples, including eight samples with high concentrations of 25(OH)D(2) (> 30 nmol/L), were assigned target values for 25(OH)D(2) and 25(OH)D(3) using reference measurement procedures (RMP). Using four replicate measurements for each sample, the mean total percent coefficient of variation (%CV) and mean % bias from the target values were determined for each assay using the 50 single-donor samples and a 42-sample subset, which excluded 8 high 25(OH)D(2) concentration samples, and compared with VDSP performance criteria of ≤ 10% CV and ≤ ±5% mean bias. All 12 assays achieved the performance criterion for %CV, and 9 of the 12 assays were within ≤ ±5 % mean bias. The Fujirebio Inc. assay exhibited the lowest %CV and highest percentage of individual measurements within ≤ ±5% mean bias. Ten immunoassays exhibited changes in response due to the high 25(OH)D(2) samples with Abbott, Biomérieux, DiaSorin, DIAsource, and IDS-iSYS assays having the largest deviations. The Fujirebio Inc. and Beckman Coulter assays were only minimally affected by the presence of the high 25(OH)D(2) samples. Samples with high concentrations of 25(OH)D(2) provided a critical performance test for immunoassays indicating that some assays may not have equal response or recovery for 25(OH)D(2) and 25(OH)D(3).
Disciplines :
Laboratory medicine & medical technology
Author, co-author :
Wise, Stephen A.
Camara, Johanna E.
Sempos, Christopher T.
LUKAS, Pierre  ;  Centre Hospitalier Universitaire de Liège - CHU > Unilab > Bone and cartilage markers laboratory
Le Goff, Caroline  ;  Université de Liège - ULiège > Département des sciences de la santé publique > Département des sciences de la santé publique
PEETERS, Stéphanie ;  Centre Hospitalier Universitaire de Liège - CHU > Unilab > Laboratoire techniques séparatives et stress oxydant
Burdette, Carolyn Q.
Nalin, Federica
Hahm, Grace
Durazo-Arvizu, Ramón A.
Kuszak, Adam J.
Merkel, Joyce
Cavalier, Etienne  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
More authors (3 more) Less
Language :
English
Title :
Vitamin D Standardization Program (VDSP) Intralaboratory Study for the Assessment of 25-Hydroxyvitamin D Assay Variability and Bias.
Publication date :
September 2021
Journal title :
The Journal of steroid biochemistry and molecular biology
ISSN :
0960-0760
eISSN :
1879-1220
Volume :
212
Pages :
105917
Peer reviewed :
Peer reviewed
Commentary :
Copyright © 2021. Published by Elsevier Ltd.
Available on ORBi :
since 26 July 2021

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