A test for rubella is done to find out if: A woman who is or wants to become pregnant is

immune to rubella. A recent infection was caused by the rubella virus. The presence of IgM

antibodies means a current or recent infection. A person has been vaccinated against rubella.0.8

AI or less: Negative - No significant level of detectable rubella IgM antibody. 0.9-1.0 AI:

Equivocal - Repeat testing in 10-14 days may be helpful. 1.1 AI or greater: Positive - IgM

antibody to rubella detected, which may indicate a current or past rubella infection.