Vitamin D, 25 OH

CPT Code: 82306

Order Code: C169

Synonyms: 25-Hydroxycalciferol; 25-OH-D; Cholecalciferol Metabolite, Vitamin D; Vitamin D3 Metabolite

Sample Type: Serum

Minimum Volume: 0.5mL

Tube Type: Tiger top tube

Collection:
1. Draw sample and gently invert 5 times (DO NOT SHAKE!)
2. Let the blood clot for 30 minutes
3. Centrifuge sample at 1300 rcf for 30 minutes

Storage Instructions: Cleveland HeartLab recommends that the sample be stored at 4°C and shipped the same day as draw.  The sample is stable for 5 days at 4°C.

Causes of Rejection: Samples will be rejected if the sample is improperly labeled

Use: Vitamin D helps control calcium and phosphate levels in the body.

Methodology: Chemiluminescence

Goal Value:  ≥30 ng/mL

Additional Information: Rule out vitamin D deficiency as cause of bone disease; differential diagnosis of hypercalcemia.