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Labcorp Oklahoma, Inc.
Test Directory


Index:

Tumor Necrosis Factor Alpha

Order Name TNF
Test Number: 3657715
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Tumor Necrosis Factor Alpha
Enzyme-Linked Immunosorbent Assay (ELISA) 3074-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.4) Serum Clot Activator SST Frozen
Alternate 1 1 mL (0.4) Serum Clot Activator (Red Top, No-Gel) Frozen
Instructions Notes: 0.4 mL (Note: This volume Does NOT allow for repeat testing.)
Specimen Type: Red-top tube or gel-barrier tube
Specimen Storage: FREEZE
Specimen Collection: Allow blood sample collected in serum separator tube to clot at room temperature for 30 minutes prior to centrifugation. Allowing samples to sit on the clot for more than 30 minutes may result in higher TNF-alpha levels. Transfer the serum into a LabCorp PP transpak frozen purple tube with screw cap LabCorp ID 23751). The specimen should be FROZEN immediately and maintained FROZEN until tested. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Specimen Stability: Ambient: Not Available, Refrigerated : Not Available, Frozen: 9 days
GENERAL INFORMATION
Expected TAT 3 - 7 days  
Performing Labcorp Test Code 140673 
Notes Labcorp Test Code: 140673
CPT Code(s) 83520
Lab Section Reference Lab