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Vitamin D, 25-Hydroxy
Test Code2916
Alias/See Also
D, 25-Hydroxy, Vitamin; VIT D 25
Preferred Specimen
Green (sodium or lithium heparin). Serum separator tube. Also acceptable:is EDTA plasma
Minimum Volume
Refrigerated.
Instructions
Heparinized plasma to to lab. (Min: 0.3 mL)
Transport Temperature
Refrigerated.
Specimen Stability
After separation from cells: Ambient: 72 hours; Refrigerated: 1 week; Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Tissue or urine. Grossly hemolyzed or lipemic specimens.
Methodology
Quantitative Chemiluminescent Immunoassay
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
Clinical Significance
This assay accurately quantifies the sum of vitamin D3, 25-Hydroxy and vitamin D2, 25-Hydroxy. Use to diagnose vitamin D insufficiency and monitor response to vitamin D therapy. Testing is recommended only for patients at risk for vitamin D insufficiency.
