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Test Name:
Rubeola IgM Antibody, Serum
- SBMF No:
44546 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
MEASLES M - ABN:
Not required - CPT Code:
86765 - LOINC Code:
25421-9 - Ref Lab Test No:
0099597 - Also Known As:
Measles IgM Antibody - Also See:
28105 Rubeola IgG Antibody, Serum - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
0.5 mL - Min Vol:
0.1 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:
Severely lipemic, icteric, heat-inactivated, contaminated, or hemolyzed sample - Spec Remarks:
Separate serum from cells ASAP - Methodology:
Enzyme-Linked Immunosorbent Assay (ELISA) - Clinical Significance:
Refer to:
- Reference Range:
0.79 AU or less: Negative - No significant level of IgM antibodies to measles (rubeola) virus detected.
0.80-1.20 AU: Equivocal - Repeat testing in 10-14 days may be helpful.
1.21 AU or greater: Positive - IgM antibodies to measles (rubeola) virus detected. Suggestive of current or recent infection or immunization. However, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization. - Day Run:
Mon-Fri - Time Reported:
2-6 days - Test Type:
INFECTIOUS ANTIBODY
