Rubella Antibody, IgM
Ordering Recommendation

Not recommended as a stand-alone test. Rubella Antibodies, IgG and IgM (0050552) is preferred.

Semi-Quantitative Chemiluminescent Immunoassay
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Serum Separator Tube (SST). 
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. 
Storage/Transport Temperature
Unacceptable Conditions
Contaminated, heat-inactivated, or grossly hemolyzed specimens. 
Label specimens plainly as acute or convalescent. 
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (Avoid repeated freeze/thaw cycles) 
Reference Interval
19.9 AU/mL or less:Not Detected.
20.0 - 24.9 AU/mL:Indeterminate - Repeat testing in 10-14 days may be helpful.
25.0 AU/mL or greater:Detected - IgM antibody to rubella detected, which may indicate a current or recent infection or immunization.

Interpretive Data
Testing immediately post-exposure is of no value without a later convalescent specimen. While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization.

The magnitude of the measured result is not indicative of the amount of antibody present.

Component Test Code*Component Chart NameLOINC
0050551Rubella Antibody IgM5335-5
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • Rubella Ab, IgM
  • Rubella Antibody IgM
  • Rubella serology