Ordering Recommendation

Detect prior exposure to T. gondii.

Mnemonic
TOXEIGG
Methodology

Semi-quantitative Chemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH 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, 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)

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).

Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

86777

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