Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Rubella susceptibility refers to a person's vulnerability to rubella infection due to lack of immunity from previous infection or vaccination. Determining immunity status is crucial, especially for women of childbearing age, as rubella infection during pregnancy can cause serious birth defects known as congenital rubella syndrome.
This blood test measures rubella antibodies to determine if you have immunity to rubella. If the test shows you are not immune, it indicates susceptibility to rubella infection, which is particularly concerning for pregnant women due to the risk of congenital rubella syndrome in the developing baby.
A blood test can accurately determine whether you have protective antibodies against rubella. This information is essential for making informed decisions about vaccination and pregnancy planning. Without immunity testing, it's impossible to know if you're protected against this potentially serious infection.
A positive result indicates immunity to rubella from either previous vaccination or natural infection. A negative result means you are susceptible to rubella and should discuss vaccination with your healthcare provider, especially if you are planning pregnancy or are of childbearing age.
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment recommendations.