0050770
print

Toxoplasma gondii Antibody, IgG

TOXEIGG
Example Reports
Detected
Not Detected

Ordering Recommendation

Detect prior exposure to T. gondii.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Serum separator tube (SST).

Specimen Preparation

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.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Contaminated, heat-inactivated, icteric, or grossly hemolyzed specimens.

Remarks

Label specimens plainly as "acute" or "convalescent."

Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (Avoid repeated freeze/thaw cycles)

Methodology

Chemiluminescent Immunoassay (CLIA)

Performed

Sun-Sat

Reported

Within 24 hours

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.

Test Number
 Components
 Reference Interval
  Toxoplasma gondii Ab, IgG <=7.1

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).

Compliance Category

FDA

Note

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
07/21/2025
X
X
N/A

CPT Codes

86777

Are you an ARUP Client? Click here for your pricing.

Components

Component Test Code* Component Chart Name LOINC
0050770 Toxoplasma gondii Ab, IgG 8039-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • parasite serology
  • T. gondii IgG
  • Toxoplasma Antibody, IgG, Serum
Toxoplasma gondii Antibody, IgG