As suggested by the CDC, any confirmed equivocal or positive results should be retested using a different assay. Caution should be exercised in the use of IgM antibody levels in prenatal screening. Any positive result should be confirmed with amniocentesis and PCR testing for Toxoplasma gondii . No significant level of antibody present. No exposure or infection is likely.
Results indicate long-standing immunity or early phase of seroconversion.
High level of antibody present. Results indicate recent seroconversion or demonstrate a persistent high level of immunity. Negative - No clinically significant level of antibody detected. Positive - Significant level of antibody detected and may indicate a current or recent infection. The diagnosis of toxoplasmosis.