Rubella IgG antibodies

Microbiology

This test is used to screen for Rubella immunity. As from 01/04/16, following the decision of Public Health England and the Department of Health , Rubella immunity is no longer routinely tested for as part of an antenatal screen. Please contact the laboratory if there is a clinical need for testing.
If Rubella infection is suspected, please request Rubella IgM antibodies
Satisfactory evidence of Rubella immunity is defined as:
- at least two previous Rubella IgG antibodies screening tests with detectable antibody greater than 10 iu per ml or;
- at least two documented doses of Rubella vaccine or;
- one documented dose of vaccine followed by one Rubella IgG antibody screening test with detectable antibody greater than 10 iu per ml
Antibody levels may fall with time. Providing that the criteria above are met a subsequent negative antibody test does not indicate loss of immunity.
When blood is submitted for rubella antibody testing, results should be reviewed together with vaccination history and previous results.
Second Rubella infections despite immunity, have been documented. If there is clinical suspicion (especially in pregnancy) please contact the Consultant Microbiologist to discuss.

Serum - paired samples not required

8.5ml of blood taken into a plain gel tub

Store at fridge temperature

Transport as soon as possible at ambient temperature

3 - 5 days