Aid in the diagnosis of suspected rubella infection.
Semi-Quantitative Chemiluminescent Immunoassay
Within 24 hours
New York DOH Approval Status
Serum separator tube.
Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 2 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 the acute specimens. Mark specimens plainly as "acute" or "convalescent."
Plasma or urine. Contaminated, heat-inactivated, or hemolyzed specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
|Rubella Antibody IgM||19.9 AU/mL or less|
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 best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.
The magnitude of the measured result is not indicative of the amount of antibody present.
|Rubella Antibody, IgG||Less than 9 IU/mL: Not Detected.
9-9.9 IU/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
10 IU/mL or greater: Detected.
|Rubella Antibody, IgM||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.
|Component Test Code*||Component Chart Name||LOINC|
|0050551||Rubella Antibody IgM||5335-5|
|0050771||Rubella Antibody IgG||8014-3|
- Rubella Ab, IgG IgM
- Rubella Antibodies, IgG and IgM
- rubella panel
- Rubella serology