Days Set Up
Monday - Friday
Analytic Time

8 hours

MiChart Code
Toxoplasma gondii Antibody, IgM
Soft Order Code

Test Updated:


Toxoplasma gondii IgM
Viral Antibody: Toxoplasma IgM
Toxoplasma IgM, Qualitative
Torch Screen

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Test Overview

Test Methodology

Chemiluminescent Immunoassay

Test Usage

Support the diagnosis of acute Toxoplasma infection. The presence of IgG antibody generally indicates past exposure and immunity. The presence of IgM antibody indicates recent infection. Elevated responses in neonates should be followed up with studies to rule out the presence of maternal antibodies, either by obtaining a convalescent specimen or by the demonstration of the absence of an IgM response.

Reference Range

NEGATIVE: Indicates no detectable IgM antibody to Toxoplasma. EQUIVOCAL: Presence or absence of IgM antibody to Toxoplasma cannot be determined. Another specimen should be sent for analysis. POSITIVE: Indicates detectable levels of IgM antibody to Toxoplasma. Detectable levels of Toxoplasma IgM antibody support the diagnosis of an acute primary or recurring latent infection.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in an SST (preferred) or red top tube.

Collection Offsite

Collect specimen in an SST (preferred) or red top tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.3 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.