FIG 1.

Testing algorithm for the serologic diagnosis of toxoplasmosis in pregnant women in the United States. *, a final interpretation of the serologic panel is made after evaluation of each test result, including titer level and a combinatorial approach where all test results are taken into account. Subsequently, gestational age, immune status, and the woman’s other medical history are factored into providing recommendations regarding treatment. **, serum samples from immunocompromised patients suspected of having chronic infection should be sent to PAMF-TSL for further confirmatory testing and interpretation.