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
Refrigerated: Unacceptable
Frozen: 1 year
Methodology
Quantitative Multiplex Bead Assay
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.
Cytokine levels may demonstrate diurnal variations.
For longitudinal comparison, it is recommended
that cytokine levels be determined at the
same time of day.
Performing Laboratory
ARUP
New York DOH Approval Status
Yes