Test Name
25-OH VITAMIN D
Aliases
25-HYDROXY VITAMIN D, 25-HYDROXYCHOLECALCIFEROL
Abbreviations
D2, D3, 25(OH)D
Test Classification
INDIVIDUAL
Department
SPECIAL CHEMISTRY
Sub Department
-
TAT Category
BUSINESS (WORKING) TIME
Estimated TAT
3
TAT Units
HOURS
Test Requirements
Serum in plain tube (red top) or SST tube (yellow top) or in a separation vial. Centrifuge tubes within 1 hour. Separate centrifuged serum in plain tubes within 1 hour.
When the order simply states vitamin D, select 25-hydroxyvitamin D (C1014) instead of 1,25 dihydroxyvitamin D (C1015).
SHIPPING/ TRANSPORTATION REQUIREMENTS
Shipping Temperature: Refrigerated
ANALYTE STABILITY
Room Temperature: 3 DAYS at 20-25°C │ Refrigerated: 7 DAYS at 2-8°C │ Frozen: 3 MONTHS at -20°C
Clinical Utility
Diagnosis of vitamin D deficiency and monitoring supplementation in patients with bone diseases such as rickets and osteomalacia.
Last Review
26th Feb 2026