|Epic Lab Code:||LAB160|
|Downtime Form:||A-1a General Laboratory Requisition|
|Plasma Separator Tube 4.5 mL|
0.8 AI or less: Negative - No significant level of detectable mumps IgG antibody.
0.9-1.0 AI: Equivocal - Repeat testing in 10-14 days may be helpful.
1.1 AI or greater: Positive - IgG antibody to mumps detected, which may indicate a current or past exposure/immunization to mumps.
Mumps IgG antibody can be formed following mumps infection or after mumps vaccination. A reactive result is consistent with immune status to mumps virus. Non-reactive and equivocal results flag as abnormal in Epic which indicates non-immune or equivocal immune status to mumps. A non-reactive result does NOT imply mumps infection. If ordered in workup of possible mumps infection, the IgG antibody results should be interpreted in conjunction with other laboratory tests, clinical history, and physical examination.
For workup related to possible mumps infection, acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimen plainly as "ACUTE" or "CONVALESCENT."