Viral Antibody: Rubella Virus IgG
Rubella IgG Antibody by IA
MMR Vaccine Response
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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.
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.