TOXOPLASMA IGM, SERUM

Toxoplasma IgM, Serum

What it is

The Toxoplasma IgM test measures IgM class antibodies in the blood against Toxoplasma gondii, a parasite that causes toxoplasmosis. IgM antibodies usually appear early after infection and help detect recent or acute toxoplasmosis.

Uses

This test is used to diagnose recent toxoplasmosis infection, particularly in pregnant women where the infection may pose risks to the unborn baby. It is also used in immunocompromised patients, such as those with HIV/AIDS or on chemotherapy, to detect active infection. The test is often performed along with Toxoplasma IgG for accurate staging of the infection.

Symptoms That May Lead to the Test

Doctors may recommend this test if you have swollen lymph nodes, unexplained fever, muscle aches, fatigue, flu-like symptoms, or vision problems. Pregnant women with suspected exposure or abnormal prenatal findings may also require this test.

Abnormal Results

Positive IgM: Suggests recent or acute infection with Toxoplasma gondii. However, false positives may occur, so confirmation with additional tests such as IgG avidity or PCR may be required.

Negative IgM: Indicates no recent infection, though chronic or past infection may still be present if IgG antibodies are detected.

Risks

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