Ordering Recommendation

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

Mnemonic
RUBEIGM
Methodology

Semi-Quantitative Chemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

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

Refrigerated.

Unacceptable Conditions

Contaminated, heat-inactivated, or grossly hemolyzed specimens.

Remarks

Label specimens plainly as acute or convalescent.

Stability

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.

Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

86762

Components
Component Test Code* Component Chart Name LOINC
0050551 Rubella Antibody IgM 5335-5
* 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.
Aliases
  • Rubella Ab, IgM
  • Rubella Antibody IgM
  • Rubella serology
Rubella Antibody, IgM