Toxoplasma infection is caused by a parasitic infection (Toxoplasmosis gondii) which may occur during pregnancy resulting in health problems in the baby which may be fatal. The first antibody reacting to the infection is IgM meaning that the infection was acquired during pregnancy or before conception. A positive IgG is the antibody appears after or together with IgM antibodies and starts a lifetime immunity. The IgG infection is never used alone for a diagnosis of early infection. In primary infection, both IgM and IgG may be detected in the serum of pregnant woman. Ig G Avidity, helps to detect the time of the infection. This test measures the binding affinity between IgG antibodies and the virus to distinguish a primary infection.
Interpretation: Following a primary Towoplasma infection IgG antibodies formed after IgMs. IgM antibodies have low binding strengths (low avidity), but after 2-4 months of infection the binding strength is high due to a more potent immunologic response established by IgG antibodies.
Sample: Arm vein blood. Nonfasting
Working day: Everyday
Result Time: Same day 6:00 PM
