Vitamin D, 25-Hydroxy
Also known as: VIT D 25
Use
This test is preferred for diagnosing vitamin D insufficiency and monitoring therapy response. Testing is recommended for patients at risk for vitamin D insufficiency. It accurately quantifies total serum 25-hydroxyvitamin D2 and D3, providing a comprehensive assessment of vitamin D status.
Special Instructions
This test is approved by the New York State Department of Health.
Limitations
It is unsuitable for patients not at risk of vitamin D deficiency. Results may be affected by gross hemolysis or lipemia, interfering with the quantification of vitamin D levels.
New York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 62292-8
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.3 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect in a serum separator tube.
Storage Instructions
Refrigerated
Causes for Rejection
EDTA plasma, tissue, or urine. Gross hemolysis or lipemia.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 1 week |
| Frozen | 6 months |