VITAMIN D, 25-HYDROXY

Specimen Required
Draw blood in a SST. Centrifuge, separate and send 0.8 mL (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Hemolyzed or moderately lipemic specimens, plasma

Methodology
Chemiluminescence

Stability
Room Temperature: Unacceptable; Refrigerated: 5 days; Frozen: 60 days

Reference Range
Vitamin D deficiency:   <10 ng/mL  
Vitamin D insufficiency:   10-30 ng/mL  
Vitamin D sufficiency:   30-100 ng/mL  
Vitamin D toxicity:   >100 ng/mL  

Performed
Monday-Friday

Turnaround Time3 days
Test CodeVITD
CPT-4 Code (s)
82306
LOINC Codes
1989-3

Warde
Medical
Laboratory