Rubella Testing

Rubella Testing is a topic covered in the Davis's Lab & Diagnostic Tests.

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Synonym/Acronym:
German measles serology.

Rationale
To assess for antibodies related to rubella immunity or for presence of rubella infection.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Chemiluminescent immunoassay.

IgMInterpretationIgGInterpretation
Negative0.9 index or lessNo significant level of detectable antibodyLess than 8 units/mLNo significant level of detectable antibody; indicative of nonimmunity
Indeterminate0.91–1.09 indexEquivocal results; retest in 10–14 days8–12 units/mLEquivocal results; retest in 10–14 days
Positive1.1 index or greaterAntibody detected; indicative of recent immunization, current or recent infectionGreater than 12 units/mLAntibody detected; indicative of immunization, current or past infection

Critical Findings and Potential Interventions

A nonimmune status in pregnant patients may present significant health consequences for the developing fetus if the mother is exposed to an infected individual.

Timely notification to the requesting health-care provider (HCP) of any critical findings and related symptoms is a role expectation of the professional nurse. A listing of these findings varies among facilities.

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