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Test Name:
IgM, Quantitative, Serum or Plasma


  • TMF No:
    28134
  • Performance Lab Name:
    TMF Automated Laboratory / Hematology
  • Test Mnemonic:
    IGM
  • CPT Code:
    82784
  • Also Known As:
    Immunoglobulin M, Serum
  • Also See:
    28130 IgA, IgG, and IgM Immunoglobulins, Quantitative, Serum
  • Spec Collect:
    Gold top (SST) or Red top (serum) tube. Also acceptable: Light Green top (PST), Green top (lithium heparin), or Lavender top (EDTA) tube. Mix by inverting tube 8 times.
  • Spec Process:
    Allow serum specimen to clot completely at room temperature. Centrifuge to separate serum or plasma from cells.
    SST or PST: Transport properly centrifuged gel-barrier tube specimens in the original collection tube.
    Other collection tubes: Transfer 0.5 mL serum or plasma to a plastic transport tube. (Min: 0.3 mL)
  • Spec Store Transport:
    Refrigerated.
  • Spec Stability:
    Room temperature: 2 months
    Refrigerated: 4 months
    Frozen: 6 months
  • Spec Reject:
    Hemolyzed specimens.
  • Methodology:
    Quantitative Immunoturbidimetric Assay
  • Additional Test Info:
    Lab Tests Online
    MedlinePlus Connect
  • Day Run:
    Sun-Sat
  • Time Run:
    As received
  • Time Reported:
    8 hours
  • Test Type:
    IMMUNOLOGY