9 days
Enzyme immunoassay (EIA)
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Hormone involved in appetite regulation. Measured in obesity, metabolic disorders, and lipodystrophy.
Serum or Plasma
0.5 mL
Red-top tube, gel-barrier 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 | 21 days |