Test Details

Mnemonic

TNFA

Ordering Code

3685260

CPT-4 Code(s)

83520

Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells within 2 hours and send 1.0 mL serum in a screw capped plastic vial.

Alternate Specimen

Serum: Red top

Minimum Volume

0.4 mL

Transport Temperature

Frozen

Rejection Criteria

Refrigerated or heat inactivated specimens

Stability

Room temperature: 30 minutes
Refrigerated: Unacceptable
Frozen: 1 year

Methodology

Quantitative Multiplex Bead Assay
more

Reference Range

≤7.2 pg/mL
Cytokine levels may demonstrate diurnal variations.
For longitudinal comparison, it is recommended
that cytokine levels be determined at the
same time of day.
more

Performing Laboratory

ARUP Reference Laboratory
more

New York DOH Approval Status

Yes
more