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Test Name:
Babesia microti IgG Antibody, by IFA


  • SBMF No:
    44642
  • Performance Lab Name:
    ARUP Laboratories
  • Test Mnemonic:
    BAB IGG
  • ABN:
    Not required
  • CPT Code:
    86753
  • LOINC Code:
    16117-4
  • Ref Lab Test No:
    0093049
  • Also See:
    44644 Babesia microti IgG and IgM Antibodies, by IFA
    44643 Babesia microti IgM Antibody, by IFA
  • Spec Type:
    Serum
  • Spec Container:
    Gold top (SST) or red top (serum) tube
  • Pref Vol:
    0.5 mL
  • Min Vol:
    0.05 mL
  • Fasting:
    No
  • Spec Collect:
    Routine venipuncture
    Parallel testing is preferred
    Label samples as: "acute" or "convalescent"
    Convalescent samples must be received within 30 days from receipt of acute samples
  • Spec Process:
    Clot 30 minutes
    Promptly centrifuge 15 minutes
    Immediately transfer serum to separate plastic tube
  • Spec Store Transport:
    Refrigerated
  • Spec Stability:
    After separation from cells:
    48 hours room temperature (20-30°C)
    2 weeks refrigerated (2-8°C)
    1 year frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles
  • Spec Reject:
    Bacterially contaminated, hemolyzed or lipemic sample
  • Spec Remarks:
    Separate serum from cells ASAP or within 2 hours of collection
  • Methodology:
    Semi-Quantitative Indirect Fluorescent Antibody (IFA)
  • Clinical Significance:
    Refer to:
    ARUP Consult | The Physician's Guide to Laboratory Test Selection and Interpretation
  • Reference Range:
    < 1:16 Negative - No significant level of detectable Babesia IgG antibody.
    1:16 Equivocal - Repeat testing in 10-14 days may be helpful.
    > 1:16 Positive - IgG antibody to Babesia detected, which may indicate a current or previous infection.
  • Day Run:
    Wed
  • Time Reported:
    2-9 days
  • Test Type:
    INFECTIOUS ANTIBODY