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Test Mnemonic VITD,25 1,25-Dihydroxyvitamin D, Serum

Additional Codes

Mayo Test ID
DHVD

Reporting Name

1,25-Dihydroxyvitamin D, S

Useful For

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-dihydroxy vitamin D)

 

Differential diagnosis of hypercalcemia

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum


Specimen Required


Patient Preparation: Fasting (4-hour preferred but not required)

Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: At least 1.5 mL


Specimen Minimum Volume

0.7 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  28 days
  Ambient  7 days

Reference Values

Males

<16 years: 24-86 pg/mL

≥16 years: 18-64 pg/mL

Females

<16 years: 24-86 pg/mL

≥16 years: 18-78 pg/mL

Day(s) and Time(s) Performed

Monday through Friday; 3 p.m.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82652

LOINC Code Information

Test ID Test Order Name Order LOINC Value
DHVD 1,25-Dihydroxyvitamin D, S 62290-2

 

Result ID Test Result Name Result LOINC Value
8822 1,25-Dihydroxyvitamin D, S 62290-2

Method Name

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