Toxoplasma gondii Antibody, IgM
Also known as: TOXEIGM
Use
The Toxoplasma gondii Antibody, IgM test detects the presence of IgM antibodies to T. gondii. It is used for the diagnosis of acute or recent infection with Toxoplasma gondii. Detection of IgM antibodies may indicate a current or recent infection but low levels can persist for more than 12 months post-infection. It is important for evaluating immune response, particularly in pregnant patients, as a part of prenatal screening. Retesting in parallel with a subsequent sample may be necessary for indeterminate or positive results.
Special Instructions
Any indeterminate or detected Toxoplasma gondii IgM result should be retested with another serum sample collected 1-3 weeks later for confirmation. Further confirmation might require a different IgM ELISA test from another reference lab specializing in toxoplasmosis. The test is not to be used for blood donor screening or for screening human cell, tissue, and tissue-based products.
Limitations
This test should not be used alone to determine infection status due to the persistence of IgM antibodies for more than 12 months post-infection. It should not be used for blood donor screening or screening human cell, tissues, and cellular-based products. False positives/negatives may occur, hence it should be interpreted in the context of clinical findings and other diagnostic results.
New York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 8040-8
Result Turnaround Time
0-1 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
Serum separator tube (SST)
Collection Instructions
Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection and transfer to an ARUP standard transport tube.
Causes for Rejection
Contaminated, heat-inactivated, icteric, or grossly hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |