TOXOPLASMA IGG, SERUM

Toxoplasma IgG, Serum

What it is

The Toxoplasma IgG test measures the presence of IgG antibodies against Toxoplasma gondii, the parasite that causes toxoplasmosis. IgG antibodies usually appear within weeks of infection and remain detectable for life, indicating past or chronic infection.

Uses

This test helps detect past exposure to toxoplasmosis, assess immunity in pregnant women, evaluate risk in immunocompromised patients, and differentiate between recent (IgM) and past (IgG) infections. It is also used in prenatal screening to prevent congenital toxoplasmosis.

Symptoms That May Lead to the Test

Testing may be recommended if you experience flu-like symptoms such as swollen lymph nodes, muscle aches, fatigue, or if you are pregnant or immunocompromised and may have been exposed to toxoplasmosis. In newborns, it may be done if congenital infection is suspected.

Abnormal Results

Positive IgG: Indicates past exposure or chronic infection with Toxoplasma gondii. Usually means immunity, but does not rule out reactivation in immunocompromised patients.

Negative IgG: Suggests no previous exposure or infection. In pregnancy, this means susceptibility to primary infection, which can be dangerous for the fetus.

Risks

The test is a simple blood test with minimal risks. Possible side effects include mild pain, bruising, or bleeding at the puncture site, and rarely dizziness or infection.