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Test ID TNFA Tumor Necrosis Factor, Plasma

Specimen Required

Specimen Required

Collection Container/Tube: Lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Immediately after specimen collection, place the tube on wet ice.

2. Centrifuge at 1500 x g for 10 minutes and aliquot plasma into plastic vial.

3. Freeze specimen within 30 minutes.

Useful For

Evaluation of patients with suspected systemic infection, in particular infection caused by gram-negative bacteria


Evaluation of patients with suspected chronic inflammatory disorders, such as rheumatoid arthritis, inflammatory bowel disease, ankylosing spondylitis, or cancers.

Method Name


Reporting Name

Tumor Necrosis Factor, P

Specimen Type

Plasma EDTA

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma EDTA Frozen (preferred) 21 days
  Refrigerated  24 hours

Reference Values

≤2.8 pg/mL

Day(s) Performed


Report Available

1 to 8 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
TNFA Tumor Necrosis Factor, P 3074-2


Result ID Test Result Name Result LOINC Value
63022 TNF, P 3074-2