ARUP's Laboratory Test Directory
| 0050770: Toxoplasma gondii Antibody, IgG |
| Test Mnemonic: TOXEIGG | |
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Methodology: Chemiluminescent Immunoassay
Performed: Sun-Sat Reported: Within 24 hours |
| Specimen Required: | |
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Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.5 mL serum at 2-8°C. Remarks: Allow serum to clot completely at room temperature. Separate serum from cells ASAP. Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimen plainly as "acute" or "convalescent." Unacceptable Conditions: Contaminated, grossly hemolyzed or heat-inactivated specimens. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
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| Reference Interval: |
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6 IU/mL or less: Negative - No clinically significant level of Toxoplasma gondii IgG antibody detected. 7-8 IU/mL: Equivocal - Repeat testing in 10-14 days may be helpful. 9 IU/mL or greater: Positive - Significant level of Toxoplasma gondii IgG antibody detected, which may indicate current or past infection. |
| Interpretive Data: | |
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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.
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| CPT Code(s): | |
| 86317 |