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Test Name:
IgM, Quantitative, Cerebrospinal Fluid


  • SBMF No:
    44796
  • Performance Lab Name:
    ARUP Laboratories
  • Test Mnemonic:
    CSF IGM
  • ABN:
    Not required
  • CPT Code:
    82784
  • LOINC Code:
    2471-1
  • Ref Lab Test No:
    0050356
  • Also Known As:
    Cerebrospinal Fluid IgM, Quantitative
    IgM, Cerebrospinal Fluid
    Immunoglobulin M, Cerebrospinal Fluid
  • Spec Type:
    Cerebrospinal fluid (CSF)
  • Spec Container:
    Sterile plastic tube with screw-top cap
  • Pref Vol:
    1.0 mL
  • Min Vol:
    0.3 mL
  • Spec Collect:
    Collected by physician
  • Spec Process:
    Promptly centrifuge 15 minutes
    Immediately transfer supernatant to separate plastic tube
  • Spec Store Transport:
    Refrigerated
  • Spec Stability:
    8 hours room temperature (20-30°C)
    8 days refrigerated (2-8°C)
    1 year frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles
  • Spec Reject:
    Grossly bloody or hemolyzed sample
  • Methodology:
    Nephelometry
  • Clinical Significance:
    Refer to:
    ARUP Consult | The Physician's Guide to Laboratory Test Selection and Interpretation
  • Reference Range:
    Immunoglobulin M, CSF
    0-0.7 mg/dL
  • Day Run:
    Sun-Sat (daily)
  • Time Reported:
    1-2 days
  • Test Type:
    CSF