Vitamin D, 25-Hydroxy, LC/MS-MS
14 days
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Accredited Laboratory Partner
Contact Technical Support
Measures total, D2, and D3 forms of vitamin D. Useful for evaluating vitamin D status, supplementation response, and differentiating sources of vitamin D.
Serum (preferred) or Plasma
1 mL
Red-top tube, gel-barrier tube, lavender-top (EDTA) tube, or green-top (heparin) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 1020 days |