Mumps Antibody IgM (Sendout)

General Information

Lab Name

Lab Code

644

External Test Id

0099589

Description

Useful For: Laboratory diagnosis of mumps virus infection.

    Ordering Notes:

    • Review by the King County Public Health epidemiologist (206-296-4774) is recommended before ordering IgM serology for suspected acute mumps infection.
    • To determine Mumps immune status, refer to test Mumps Immune Status [MPIS].

    References

    Synonyms

    MMPM, Mumps IgM, Mumps Serology

    Interpretation

    Method

    Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA)

    Reference Range

    Ref. Range Notes

    Reference Interval: <= 0.79 IV

    Interpretation:

    0.79 IV or less: Negative. No significant level of detectable IgM antibody to mumps virus.
    0.80-1.20 IV: Equivocal. Borderline levels of IgM antibody to mumps virus. 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 antibody may occasionally persist for more than 12 months post infection or immunization.

    Guidelines

    Ordering & Collection

    Specimen Type

    Blood

    Collection

    3 mL blood in GOLD SST or RED TOP tube

    Handling Instructions

    Outside Laboratories: Centrifuge sample and aliquot serum to a separate plastic vial. Refrigerate serum while awaiting shipment. Transport with a cold pack.

      Stability: Refrigerated (preferred): 2 weeks; Frozen: 1 year (avoid repeat freeze/thaw cycles); Ambient: 48 hours.

        Reject Due To: Bacterially contaminated, heat-inactivated, hemolyzed, icteric, lipemic, or turbid specimens.

        Quantity

        requested: 1 mL serum
        minimum: 0.5 mL serum

        Processing

        Centrifuge sample and aliquot serum to a separate plastic vial. Refrigerate serum.

          Stability: Refrigerated (preferred): 2 weeks; Frozen: 1 year (avoid repeat freeze/thaw cycles); Ambient: 48 hours.

          Reject Due To: Bacterially contaminated, heat-inactivated, hemolyzed, icteric, lipemic, or turbid specimens.

          Performance

          LIS Dept Code

          Performing Location(s)

          Sendout ARUP Laboratories, Inc.
          800-522-2787

          500 Chipeta Way
          Salt Lake City, UT 84108

          Frequency

          Performed: Monday through Friday. Reported: 1-5 days from sample receipt at ARUP Laboratories.

          Available STAT?

          No

          Billing & Coding

          CPT codes

          Billing Comments

          CPT: 86735

          LOINC