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Test Name:
Babesia microti IgM Antibody, by IFA
- SBMF No:
44643 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
BAB IGM - ABN:
Not required - CPT Code:
86753 - Ref Lab Test No:
0093050 - Also See:
44644 Babesia microti IgG and IgM Antibodies, by IFA
44642 Babesia microti IgG 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 (-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:
- Reference Range:
< 1:20 Negative - No significant level of detectable Babesia IgM antibody.
1:20 Equivocal - Repeat testing in 10-14 days may be helpful.
> 1:20 Positive - IgM antibody to Babesia detected, which may indicate a current or recent infection. - Day Run:
Wed - Time Reported:
2-10 days - Test Type:
INFECTIOUS ANTIBODY
