The Rubella IgG Antibody test measures the level of IgG antibodies against the Rubella virus (German measles) in the blood. IgG antibodies are long-lasting and develop after a rubella infection or vaccination, indicating immunity to the virus. Rubella is a contagious viral infection that is usually mild in children and adults but can cause serious birth defects (Congenital Rubella Syndrome) if a pregnant woman is infected, particularly in the first trimester.
This test is commonly performed as part of prenatal screening to confirm that a pregnant woman is immune to rubella, thereby protecting her unborn baby. It is also used to verify immunity in healthcare workers, students, and individuals planning pregnancy. A positive IgG result indicates immunity, while a negative result suggests susceptibility and the need for vaccination (not during pregnancy).