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Lab Manual for Moffitt-Long and Mount Zion

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Rubella Antibody

Item Value
Approval req'd? No
Available Stat? No
Test code RUBI
Performed by Immunology
In House Availability Tuesday & Friday (day shift)
Method Chemiluminescent Immunoassay
Container type Gold top
Amount to Collect 1 mL blood
Sample type Serum
Preferred volume 0.5 mL serum
Min. Volume 0.2 mL serum
Processing notes Refrigerate sample
Normal range Positive result indicates immunity
Synonyms Prenatal screening; TORCH Antibodies; German measles
Turn around times 1-4 days
Additional information For occupational or early post-exposure screening, a single specimen is generally sufficient to determine immunity to rubella infection. An EQUIVOCAL result may not provide sufficient protection from clinical illness upon exposure to rubella virus.

When congenital infection is suspected, an initial negative result most likely excludes the diagnosis. If the result is positive in the initial specimen, a second sample should be submitted 3 months later to distinguish transplacentally-transmitted maternal antibody from congenital infection.

See also entry for Rubella Culture and table for Viral Serology. Acute cases of rubella should show a rise in antibody from an initially negative or equivocal level.
LOINC code 51931-4
Last Updated 2/19/2014 4:06:11 PM
Entry Number 834

If you have additional questions regarding this test, please call: 415-353-1667

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