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Test Name:
Interleukin 6, Highly Sensitive

  • TMF No:
  • Performance Lab Name:
    Quest Diagnostics Nichols Institute, SJC
  • Test Mnemonic:
    IL6 SENS
  • CPT Code:
  • Ref Lab Test No:
  • Also Known As:
    IL-6; IL6; Interleukin-6, Highly Sensitive ELISA
  • Patient Prep:
    Cytokine levels may demonstrate diurnal variation. Recommend cytokine levels be determined at the same time of day for improved longitudinal comparison.
  • Spec Collect:
    Lavender top (EDTA) tube. Also acceptable: Red top (serum) tube. Mix by inverting tube 8 times.
  • Spec Process:
    Allow serum specimen to clot completely at room temperature. Centrifuge to separate from cells and transfer 1 mL plasma or serum to a screw-capped plastic transport tube. (Min: 0.5 mL)
  • Spec Store Transport:
    CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
  • Spec Stability:
    After separation from cells:
    Room temperature: 24 hours
    Refrigerated: 48 hours
    Frozen: 7 months
  • Spec Reject:
    Hemolyzed, icteric, or lipemic specimens. Thawed specimens. Serum separator (SST) tubes.
  • Methodology:
    Quantitative Enzyme-Linked Immunosorbent Assay (ELISA)
  • Clinical Significance:
    To evaluate the level of IL-6 in serum or EDTA plasma samples.
  • Interpretive Data:

    0.31-5.00 pg/mL

    This test was performed using a kit that has not been approved or cleared by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics Nichols Institute, San Juan Capistrano. This test should not be used for diagnosis without confirmation by other medically established means.

  • Day Run:
    Sets up 1 day a week.
  • Time Run:
  • Time Reported:
    Reports in 4 days.
  • Test Type: