Test Overview
Test Methodology

Chemiluminescent Immunoassay

Test Usage

Support the diagnosis of Toxoplasma infection. The presence of IgG antibody generally indicates past exposure and immunity. The presence of IgM antibody indicates recent infection. Single IgG levels are not useful for supporting the diagnosis of an acute infection. Elevated levels in neonates should be followed up with studies to rule out the presence of maternal antibodies by demonstrating the absence of an IgM response.

Reference Range *

NEGATIVE: No detectable IgG antibody to Toxoplasma. EQUIVOCAL: Presence or absense of IgG antibody to Toxoplasma cannot be determined. Another specimen should be sent for analysis. POSITIVE: Detectable levels of IgG antibody Toxoplasma. Detectable levels of Toxoplasma antibody indicate exposure to Toxoplasma gondii.

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

Test Limitations

The performance characteristics of this test have not been established for CSF, neonates, infants or cord blood. This is a qualitative test; quantitation for comparison of acute and convalescent sera has not been validated by the manufacturer of the current test system. Result values from different methodologies or from different institutions cannot be compared.

Test Details
Days Set Up
Monday - Friday
Analytic Time

8 hours

Soft Order Code
TOXG
MiChart Code
Toxoplasma gondii Antibody, IgG
Synonyms
  • TOXG
  • Toxoplasma IgG, Qualitative
  • Toxoplasma gondii IgG
  • Viral Antibody: Toxoplasma IgG
  • TOXOGE
  • TOXO IGG ANTIBODY BY EIA
  • Torch Screen
Laboratory
Chemical Pathology
Section
Special Chemistry
Specimen Requirements
Collection Instructions

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
Additional Information

The magnitude of the measured result is not indicative of the amount of antibody present.

Billing
CPT Code
86777
Fee Code
35997
LOINC
40677-7
Resources