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Test Compendium


Test Code

  • 6357

Test Synonym

  • Tumor Necrosis Factor

Minimum Volume

  • 1 mL

Specimen Requirements

  • Serum


  • Transfer Tube- Frozen- Serum


  • Frozen

Turn Around Time

  • 7 days

CPT Codes

  • 83520
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • 1 mL FROZEN Serum - SHIP immediately only stable 7 days

Additional Information

  • Frozen serum from a SST (gel-barrier) or Re Top tube, spun & separated; Transfer the serum into a plastic transport tube and 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

  • 7 days