Vitamin D (1,25 Dihydroxy)
Commercial Mail-out Laboratory
|Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1 mL serum
Absolute Minimum: 0.5 mL serum
SST or gels tubes are not appropriate (per Medical Director, Core
Deliver to laboratory immediately after collection.
24 hours upon receipt at reference laboratory (upon receipt in laboratory)
19.9 - 79.3 pg/mL
Measurement of "Vitamin D (1,25-dihydroxy)" is intended for workup of
complex vitamin D issues in the assessment of hypercalcemia, assessment
of vitamin D in patients with renal failure, and certain malignancies.
This assay is NOT intended for routine assessment of Vitamin D
nutritional status (see "Vitamin D, 25-Hydroxy, Plasma").
This test is primarily indicated during patient evaluation for
hypercalcemia and renal failure. A normal result does not rule out
Vitamin D deficiency. The recommended test for diagnosing Vitamin D
deficiency is Vitamin D 25-hydroxy.
Quantitative Chemiluminescent Immunoassay