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Test Directory

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

Method

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

Schedule

Sunday - Saturday

Turn-Around Time

Send-Out

Instructions/Notes

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

82652

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