Mumps IgG (MUM)
Department: Virology
Test Synonym(s): LAB160, MUM, Mumps IgG Antibody
Test Components: Mumps IgG
CPT Codes: 86735
Methodology: EIA
Reference Range: Unvaccinated: Negative Vaccinated: Positive
Tube Type: Gold top SST (Clot activator with gel) or Red top (no gel)
Specimen: Serum
Alternate Specimen: None
Pediatric Requirements: Red top microtainer, 1 mL
Volume: 1 tube
Minimum Volume: Red top microtainer (1 mL)
Temperature: Allow to clot, store refrigerated (2-8 degrees C)
Stability: Labile specimen, keep refrigerated
Reasons for Rejection: Same assay ordered within 4 days, gross contamination, hemolysis, lipemia, icteric
Days Performed: Monday - Friday
Times Performed: Morning
TAT: Same day to 3 days
Significance: Mumps virus-specific IgG may not be detectable early during primary infection. A second specimen should be tested at least 14 days later if mumps virus infection is suspected. Interpret negative results on immunocompromised patients with caution.
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