Vitamin D, 25-Hydroxy
Test name: Vitamin D, 25-Hydroxy
Order Code: VITA D
Preferred Specimen: 2mL serum in a Serum Separator Tube (SST or Tiger-top)
CPT Code: 82306
Collection: Allow SST to clot in an upright position for 30 min, then centrifuge sample within 2 hours of collection. Refrigerate.
Special Instructions and Considerations: Samples should not be taken from patients receiving therapy with high biotin doses (i.e. > 5 mg/day) until at least 8 hours following the last biotin administration.
Transport Temperature: Refrigerated
Specimen Stability: 8 hours under room temperature; 4 days refrigerated
Causes for Rejection: Hemolysis