TUMOR NECROSIS FACTOR

Test Documentation
Specimen Required
Draw blood in a SST. Centrifuge, separate serum from cells within 2 hours and send 1.0 mL serum (0.3 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
Plasma: Lithium heparin
Serum: Red-top

Methodology
Quantitative Multiplex Bead Assay

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

Reference Range
<=22 pg/mL

Performed
Monday, Wednesday, Friday

Turnaround Time4-7 days
Test CodeTNFA
CPT-4 Code (s)
83520
LOINC Codes
3074-2

Warde
Medical
Laboratory