Endocrine Abstracts

Background: Quantification of 1,25-dihydroxyvitamin D (1,25(OH)2D) remains challenging because of low circulating concentrations and potent cross-reactivities with steroid-like structures. The most frequent assays for 1,25(OH)2D testing are still based on RIA format with preliminary extraction. The analytical performances and the turnaround time of analysis (TAT) for these assays are limited. Several novel assays for 1,25(OH)2D testing are emer...