1,25-DIHYDROXYVITAMIN D

General Information

HLAB/HOL Code: DHVD
UPHSM LIS Test #: 025840
Schedule:
Testing Time: 2-4 Days
Testing Lab: Mayo Labs

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 2.0 mL
Temperature: Refrigerate
Tube Type: Serum
Collection Info:
Patient Preparation: Fasting (4-hour preferred but not required)
Preferred: Red top
Acceptable: Serum gel

Specimen Acceptability

Reject Due To:
Hemolysis
Mild OK; Gross reject
Lipemia
Mild OK; Gross OK
Icterus
Mild OK; Gross OK

Methods

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

Clinical Utilities

As a second-order test in the assessment of vitamin D status, especially in patients with renal disease

Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25-dihydroxyvitamin D)

Differential diagnosis of hypercalcemia

CPT Codes

82652

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

Males:
<16 years: 24-86 pg/mL
> or =16 years: 18-64 pg/mL

Females:
<16 years: 24-86 pg/mL
> or =16 years: 18-78 pg/mL