Tumor Necrosis Factor
Centralized Core Laboratory:Chemistry
Red top (no additive) tube
2.5mL (minimum 1.25mL)
Sent to reference lab, Days performed: Tues
Enzyme Linked Immunosorbent Immunoassay
Allow blood to clot 10-15 minutes, centrifuge, and separate serum from cells. Freeze ASAP.
Cytokine levels may demonstrate diurnal variation. Recommend cytokine levels be determined at the same time of day for improved longitudinal comparison.
OC Power Word:
Reference range: 1.2-15.3 pg/mL