Cachectin, TNF
11 days
Enzyme-linked immunosorbent assay (ELISA)
Allow blood sample collected in serum separator tube to clot at room temperature for 30 minutes prior to centrifugation. Allowing samples to sit on the clot for more than 30 minutesmay result in higher TNF-alpha levels.
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Inflammatory cytokine measured in autoimmune and inflammatory diseases.
Serum
1 mL
Red-top tube or gel-barrier 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 |
|---|---|
| Frozen | 9 days |