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Test Code LAB161 Mumps Virus Antibody, IgM, Serum

Important Note

Ordering this test seeks evidence of acute infection. If so, the patient may be contagious and should be placed in isolation. Infection Control must be notified. Priority of testing (stat vs. routine) is determined by State Epidemiologist on call (206) 418-5500. Ordering provider must contact State Epidemiologist and then notify Lab of testing priority. If recommended by the State Epidemiologist, urine and throat swabs may be sent along with the serology to Washington State Laboratory.

Additional Codes

Mumps IgM

Reporting Name

Mumps Ab, IgM, S

Useful For

Laboratory diagnosis of mumps virus infection

Seattle Children's Hospital Note:

This test is exclusively for the purpose of ruling out an active Mumps infection.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type


Specimen Required

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into plastic vial.

Seattle Children's Hospital Note:

Collect 3 Gold SST Microtainers.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  14 days

Reference Values

Negative: Index value 0.00-0.79

Reference value applies to all ages.

Day(s) Performed


Seattle Children's Hospital Note:

TAT: 3 - 6 days

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
MMPM Mumps Ab, IgM, S 6478-2


Result ID Test Result Name Result LOINC Value
MUMP1 Mumps Ab, IgM, S 6478-2
DEXM Index Value 25419-3

Method Description

The SeraQuest mumps IgM assay is an enzyme capture method. Diluted samples are incubated in wells coated with antihuman-IgM monoclonal antibodies. If present, IgM antibodies are captured in the wells. Wells are washed, removing excess sample. Conjugate-antigen complex (mumps antigen in a complex with monoclonal antibodies conjugated to horseradish peroxidase) is added, and the wells are incubated. IgM antibodies specific for the antigen will bind the conjugate. Wells are washed, removing excess conjugate. Peroxidase substrate is added, and the wells are incubated. Stop solution is added converting the substrate to a yellow end product, which is read photometrically.(Package insert: Mumps IgM. Quest International; V04/2018)

Report Available

Same day/1 to 4 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Heat-inactivated specimen Reject

Method Name

Enzyme Immunoassay (EIA)


If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.

Seattle Children's Hospital Additional Information:

Aliases: Mumps IgM; Mumps Serology