Rubella Antibody (IgG) Test

The Rubella Antibody IgG test is a critical diagnostic tool used to assess immunity against the rubella virus (RuV). Rubella is a contagious viral infection caused by the RuV virus. Also known as German measles, rubella causes low-grade fever and rashes that usually start on the face and gradually affect the whole body. The condition can have a detrimental impact on newborns if they are infected by the virus. Rubella is particularly dangerous during pregnancy, as it can cause severe birth defects, known as congenital rubella syndrome (CRS), or lead to miscarriage. CRS can develop during the first trimester of the pregnancy. Other birth defects associated with CRS include hearing loss, vision problems including cataracts, and heart diseases. The Rubella IgG test detects the presence of IgG antibodies, which develop after exposure to the rubella virus or after vaccination. These antibodies remain in the bloodstream for life, providing long-term immunity. The rubella vaccine, part of the MMR (measles, mumps, rubella) vaccination, is highly effective at preventing the virus. Individuals who plan to conceive are encouraged to verify their immunity, as infection during pregnancy poses serious risks to the unborn child. Routine testing is recommended for the presence of rubella antibodies for individuals planning to conceive or for those who are unsure of their vaccination status. If you're and want to assess your immunity to rubella, scheduling a Rubella Antibody IgG test at home provides a convenient and reliable way to assess your immunity.

What the 1 parameters cover

Typical reference ranges — your report marks anything outside them:

The Rubella IgG test serves several important purposes in assessing immunity and recent infection. Here are the key reasons why this test is performed: To Check Immunity in Pregnant or Prospective Mothers For women who are pregnant or planning to become pregnant, the Rubella IgG test is essential to determine if they are immune to rubella. Immunity protects both the mother and the developing foetus from complications like congenital rubella syndrome. To Confirm Recent or Active Rubella Infection If someone shows symptoms of a viral infection, this test helps identify whether rubella is the cause. The presence of IgM antibodies indicates a current or recent infection, while the presence of IgG antibodies suggests immunity from a past infection or vaccination. To Assess Immunity from Vaccination The test is also done to confirm whether a person has been vaccinated against rubella. Detection of rubella-specific IgG antibodies demonstrates immunity, whether from vaccination or a prior infection. To Screen for Congenital Rubella in Newborns In cases where a baby is born with birth defects, testing for rubella IgG antibodies can help determine whether congenital rubella is the cause. This is vital for early diagnosis and management. For Health Professionals in Contact with Pregnant Women Healthcare workers, especially those who work closely with pregnant women, may need this test to confirm immunity to rubella. If a health professional is not immune, vaccination may be recommended to reduce the risk of transmission to pregnant women and serious complications in the foetus.

Understanding your report

What your results can mean — always review them with your doctor:

Rubella-specific IgG antibodies provide insight into whether an individual has immunity through prior infection or vaccination, or if they may be susceptible to infection. The table below will help you understand the test results: Please Note: For vaccinated individuals, rubella virus can be found in respiratory secretions for up to 4 weeks after vaccination and antibodies persist for at least 16 years in most cases and for a lifetime in about 95% of vaccinated individuals. In congenital rubella, antibodies may disappear by age 3-4 years, so a negative test in older children does not necessarily exclude congenital rubella.