Comparison of Automated Methods for Measurement of 25-Hydroxyvitamin D

The objective of the study was to compare the analytical performance of three automated immunoassays for the determination of serum 25-hydroxyvitamin D.Quantitative determination of serum 25(OH)D were performed by "Vitamin D total" (n = 131) and "Vitamin D3(25-OH)" (n = 77) assays (Roche Diagnostics) on a Cobas e411 and by "25-OH Vitamin D" (n = 131) assay (Abbott Laboratories) on an Architect. The inter-assay precision was calculated and...