Mumps Antibody, IgM

Abbrev Code:MUMM   
Order Code:LAB161Order Name:MUMPS ANTIBODY IGM
Methodology:Enzyme-linked immunosorbent assay
CPT Codes: 86735 x1
Turnaround Time:Specimens are sent to the reference laboratory Mon-Sat; results are reported within 1-5 days.
Special Instructions:Parallel testing is preferred. Label samples as acute or convalescent. Convalescent specimens must be received within 30 days from receipt of the acute specimens.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel)
Alternate Containers: Red (no gel)
Causes for Rejection:Bacterially contaminated, heat-inactivated, hemolyzed, icteric, lipemic, or turbid specimens.

Processing and Shipping

Specimen Processing:Separate serum from cells within 2 hours of collection. Centrifuge and aliquot 1 mL,  0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:After separation from cells: 48 hours at room temperature; 2 weeks refrigerated; 1 year frozen. Avoid repeated freeze/thaw cycles.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:99589 (MUMPS IGM)


Reference Range:

0.79 IV or less

Negative: No significant level of detectable IgM antibody to mumps virus.

0.80-1.20 IV

Equivocal: Repeat testing in 10-14 days may be helpful.

1.21 IV or greater

Positive: Presence of IgM antibody to mumps virus detected, which may indicate a current or recent infection. However, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization.



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