Days Set Up
Daily, 24 hours
Analytic Time

4 hours

MiChart Code
Rubella Antibody, IgG
Soft Order Code

Test Updated:


Viral Antibody: Rubella Virus IgG
Rubella IgG Antibody by IA
MMR Vaccine Response
Torch Screen

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Test Overview

Test Methodology

Chemiluminescent Immunoassay

Test Usage

Support the diagnosis of Rubella virus infection. The presence of IgG antibody generally indicates past exposure and immunity or immunization and immunity. The presence of IgM antibody or a fourfold or greater rise in titer of IgG antibodies in paired sera indicates recent infection. Single IgG levels are not useful for supporting the diagnosis of an acute infection. Elevated levels in neonates should be followed up with studies to rule out the presence of maternal antibodies by demonstrating the absence of an IgM response.

Reference Range

NON-REACTIVE/Negative: No detectable IgG antibody to Rubella virus. EQUIVOCAL: Presence or absence of IgG antibody to Rubella virus cannot be determined. Another specimen should be sent for analysis in two weeks. REACTIVE/Positive: Detectable levels of IgG antibody to Rubella. Detectable levels of Rubella antibody indicate previous exposure to Rubella virus or immunization.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite


Collection Offsite

Collect specimen in SST. Centrifuge, aliquot serum into a plastic vial and refrigerate. Post-vaccination samples should be collected 4-6 weeks from the date of vaccination.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.