7769 Vitamin D,1,25-Dihydroxy,LC/MS/MS

Specimen Type Specimen Stability Reference Range
Serum 28 Days, Ambient
28 Days, Refrigerated
Frozen-28 Days
See Report

Specimen Requirements

Specimen Type: Serum
Container: 1 Red Top Tube
Temperature: Refrigerated
Preferred Vol: 2.00 mL
Min Vol: 1.10 mL


Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)


Sunday - Saturday

Turn-Around Time



SST not Acceptable.

Clinical Utility

This test measures the bioactive form of vitamin D. It is used in the differential diagnosis of hypocalcemia and to monitor patients with renal osteodystrophy or chronic renal failure. This test is not suitable for diagnosis of vitamin D deficiency and monitoring monitoring supplementation in most patients. The 25-hydroxyvitamin D test is the recommended test for those purposes (N Engl J Med. 2007;357:266-281).

CPT Codes


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