Research Article

Measurement of Circulating 25-Hydroxy Vitamin D Using Three Commercial Enzyme-Linked Immunosorbent Assay Kits with Comparison to Liquid Chromatography: Tandem Mass Spectrometry Method

Table 1

Comparison of mean (SD) 25(OH)D concentrations (nmol/L) from different 25(OH)D assays.

Sample size for comparison bloodsLC-MS/MSEagle BiosciencesImmundiagnostikMicroVueWilcoxon signed-rank testPearson's correlation