||Mumps Virus Antibody, IgM
||Mumps Virus Serology
||Enzyme-Linked Immunosorbent Assay
||Monday, Wednesday, Friday; results 1 to 6 days
| Collection Device:
||One 6.0 mL Clot (Red) or one 6.0 mL SST (Gold) tube
||1 - 4 mL blood (0.5 - 2.0 mL serum)
||Separate serum from the cells ASAP. Transport and store refrigerated, and if transport > 48 hours, aliquot and freeze.
||Severely lipemic, icteric or hemolyzed samples; heat-activated serum; multiple freeze thaw cycles
| Specimen Stability:
||After separation from cells: ambient, < 8 hours; refrigerated, 48 hours; frozen, 1 year
| Reference Interval:
||≤ 0.79 IV: 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 recommended.
≥ 1.21 IV: POSITIVE - Presence of IgM antibody to Mumps virus detected which may indicate a current or recent infection.
| Reportable Disease:
||A positive result is reportable
||While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for > 12 months post infection or immunization.