VITAMIN D, 25-HYDROXY

Specimen Required
Draw blood in a SST. Spin, separate and send 2.0 mL (0.8 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Moderately hemolyzed or lipemic specimens, plasma

Methodology
Chemiluminescence

Stability
Room Temperature: Unacceptable; Refrigerated: 5 days; Frozen: 14 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 potential toxicity:   >100 ng/mL  

Performed
Monday-Friday

Turnaround Time2-3 days
Test CodesVITD25H
10-07180
CPT-4 Code (s)
82306
LOINC Codes
35365-6

Warde
Medical
Laboratory