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Toxoplasma gondii Antibody, IgG
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Ordering Recommendation
Detect prior exposure to T. gondii.
Mnemonic
Methodology
Semi-quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
Specimen Required
Serum Separator Tube (SST).
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens.
Refrigerated.
Contaminated, heat-inactivated, or grossly hemolyzed specimens.
Label specimens plainly as acute or convalescent.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (Avoid repeated freeze/thaw cycles)
Reference Interval
Effective March 3, 2014
| 7.1 IU/mL or less: | Not Detected. |
| 7.2-8.7 IU/mL: | Indeterminate - Repeat testing in 10-14 days may be helpful. |
| 8.8 IU/mL or greater: | Detected. |
Interpretive Data
The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.
The magnitude of the measured result is not indicative of the amount of antibody present.
This test should not be used for blood donor screening, associated re-entry protocols, or for screening Human Cell, Tissues and Cellular and Tissue-Based Products (HCT/P).
FDA
Note
Hotline History
CPT Codes
86777
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0050770 | Toxoplasma gondii Ab, IgG | 8039-0 |
Aliases
- parasite serology
- T. gondii IgG
- Toxoplasma Antibody, IgG, Serum
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