17 days
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Accredited Laboratory Partner
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Hormone regulating sleep-wake cycles. Levels may be measured in sleep disorders.
Serum or Plasma
1 mL
Red-top tube or lavender-top (EDTA) 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 | 14 days |
| Refrigerated | 30 days |
| Frozen | 365 days |