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HelpTest Code MUMPEV Mumps Virus Antibody, IgG, Serum
Performing Laboratory
MaineGeneral Medical Center
Useful For
The qualitative and semi-quantitative detection of human IgG antibodies to the mumps virus in human serum by enzyme immunoassay. May be used to determine immune status. Paired (acute/convalescent) sera may be used to demonstrate seroconversion or significant rises in antibody level as an aid in the diagnosis of primary infection.
Specimen Requirements
Serum
Draw blood in a gold-top (serum separator) gel tube or a red-top (no additive) tube. Label the specimen with the patient’s name (first and last), date of birth, date and time of draw, the phlebotomist’s initials and as serum. Spin down and send 1 mL of serum refrigerated.
*Paired, acute/convalescent specimens should be collected ten to fourteen days apart, and tested concurrently.
Specimen stability:
2 days refrigerated at 2-8°C
Freeze at ≤ -20°C for longer storage
Minimum volume:
1 mL
Specimen rejection criteria:
Grossly hemolyzed, icteric or contaminated samples will be rejected.
Reference Ranges
Reported as positive, negative and equivocal
<0.9 - Negative for mumps IgG, presumed non-immune to mumps infection
>0.9 - <1.1 - Equivocal
>1.1 - Positive for mumps IgG, presumed immune to mumps infection
When an equivocal result is obtained, another specimen should be obtained ten to fourteen days later and tested in parallel with the initial specimen. If the second specimen is also equivocal, the patient is negative for primary or recent infection and equivocal for antibody status. If the second specimen is postitive, the patient can be considered to have a primary infection. The conversion of an individual patient's serum from negative to postive for antibodies to the infectious agent in question is defined as seroconversion and indicates active or recent infection.
Day(s) Test Performed
Tuesday and Friday
Test Classification and CPT Coding
86735