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Test Name

Toxoplasma Antibodies (IgG, IgM)

CPT Code(s)

86777, 86778

Methodology

Immunoassay

Limitations

The U.S. Food and Drug Administration (FDA) is advising physicians that they should not use the result from any one Toxoplasma IgM commercial test kit as the sole determinant of recent Toxoplasma infection when screening a pregnant patient. Because these tests can have false-positive results, reliance on a single test result could lead to misdiagnosis, resulting in unnecessary treatment of the patient and/or termination of the pregnancy.

Reference Range(s)

See laboratory report

Clinical Significance

Toxoplasmosis is a parasitic infection caused by the protozoan Toxoplasma gondii. Approximately 23% of the immunocompetent population are asymptomatic carriers of the parasite. The combination of high titers of IgG and IgM antibodies to Toxoplasma gondii is consistent with infection in the last three months. High titers of IgG and low to medium titers of IgM antibodies to Toxoplasma gondii are consistent with infection in the last three to six months.

To view specimen requirements and codes please Select a regional laboratory.

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Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

7690N
8636X
8636
8636
8636
8636
7690A
8636
7690A
8636X
25960
8636
8636
8636
2263
8636
8636
8636
8636
8636
8636
7690A
8636
8636 NTC
8636 TOX AB
TOXAB G/M
8636X
7690A
8636
8636
8636X
25960
8636X
8636
Toxoplasma Antibodies (IgG, IgM)
8636