TUMOR NECROSIS FACTOR - ALPHA, SERUM

Specimen Required
Draw blood in a SST. Centrifuge, separate serum from cells within 2 hours and send 1.0 mL serum (0.4 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Refrigerated specimens, heat-inactivated specimens

Methodology
Quantitative Multiplex Bead Assay

Stability
Room Temperature: 30 minutes; Refrigerated: Unacceptable; Frozen: 1 year

Reference Range
<=7.2 pg/mL
Cytokine levels may demonstrate diunal variations. For longitudinal comparison, it is recommended that cytokine levels be determined at the same time of day.

Performed
Sunday-Saturday

Turnaround Time2-6 day
Test CodeTNFA
CPT-4 Code (s)
83520
LOINC Codes
3074-2

Warde
Medical
Laboratory