VITROS Immunodiagnostic Products 25-OH Vitamin D Total Calibrators; REF/CATALOG # 684 4055, IVD --- COMMON/USUAL NAME: VITROS Vitamin D Calibrators -- Ortho-Clinical Diagnostics High Wycombe HP12 4DP, UK --- For use in the calibration of the VITROS ECi/ECiQ Immunodiagnostic Systems, the VITROS 3600 Immunodiagnostic Systems, and the VITROS 5600 Integrated System for the quantitative measurement of total 25-OH Vitamin D in human serum.