Vitamin D, 25-Hydroxy
Collect at least 1 mL blood in a red-top (preferred) or gel barrier serology tube. Centrifuge the blood and remove the serum/plasma from the cells within two hours of collection.
- Ambient or Refrigerated
- Ambient: 7 days
- Refrigerated: 14 days
- Frozen (-20°C): 14 days
- The diagnosis of vitamin D deficiency and/or hypervitaminosis D;
- Potential differential diagnosis of rickets and osteomalacia; and
- Tracking vitamin D replaement therapy.
Immunochemiluminometric assay (ICMA).
1 - 3 days