Specimen Requirements


Toxoplasma Antibody IgM

Specimen Requirement

Collect SST/1.0 mL serum, after 30 minutes of clotting promptly centrifuge and send.


Immunoassay (IA)


Room temp: 4 days, Refrigerated: 7 days, Frozen: 30 days

Reference Range

By Report*


5 days, Set up Tuesday, Thursday, Saturday

Clinical Use

T. gondii IgM is typically detected within a few days of infection, peaks within a few weeks, and usually falls to undetectable levels within a few months. In some patients, however, T. gondii IgM persists for more than a year; Thus, detection of T. gondii IgM does not necessarily indicate recent or ongoing toxoplasmosis.

Test Code