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HelpCatalog ID Rubella Rubella IgG Antibody
CPOE Test Name
Rubella
Epic EAP Test Code
LAB496
Synonyms
German Measles titer; Rubella; Rubella Antibody; Rubella IgG
Specimen Type
Serum
Specimen Requirements
Gold Top serum separator tube; 2 mL blood minimum
Causes for Rejection
Lack of appropriate labeling; incorrect specimen type, insufficient quantity; heat inactivated specimens, grossly lipemic specimens, and grossly hemolyzed specimens will not be tested with this assay.
CPT / HCPCS Code
86762
Storage and Transport
Specimens may be stored for up to 7 days at 2 – 8° C. Specimens in which testing will be delayed for longer than 7 days should be frozen.
Reference Range
Non-Reactive: No previous exposure
Reactive: Previous exposure or vaccination
Indeterminate: Insufficient antibody for immunity.
Interpretation
Reactive: Specimens with results greater than or equal to 15 IU/mL are considered positive for IgG antibody to rubella virus. This would indicate past exposure to rubella virus.
Non-Reactive: Specimens with results less than 10 IU/mL are considered negative for IgG antibody to rubella virus. This either indicates no previous exposure to rubella virus or exposure which is very recent or very old which has resulted in a titer of antibody below the detectable level of this assay.
Indeterminate: Specimens with results equal to 10 IU/mL but less than 15 IU/mL are considered Indeterminate. A new specimen should be collected and tested. Antibody levels in the equivocal range for this assay may be insufficient to protect against clinical illness upon exposure to rubella virus.
Day(s) Performed
Monday - Friday
Performing Lab
Core Lab AD 3301 721-2120
Methodology
Semi-quantitative measurement of Rubella IgG antibodies.