Toxoplasma Antibody (IgG)

Test Code
3679


CPT Codes
86777

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Transport Container
Plastic screw-cap vial


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days


Methodology
Immunoassay (IA)

Setup Schedule
Set up: Mon, Wed, Fri a.m.; Report available: Next day


Limitations
During reactivation, an IgM response may not occur, or be present at levels too low to be detected.


Reference Range
IU/mL Interpretation
<7.20 Negative
7.20-8.79 Equivocal
>8.79 Positive


Clinical Significance
Toxoplasmosis is a parasitic infection caused by the protozoan Toxoplasma gondii. Approximately 23% of the immunocompetent population are asymptomatic carriers of the parasite. High titers of IgG antibodies to Toxoplasma gondii can persist for years. Rising IgG titers after birth, in the absence of a placental leak, are consistent with neonatal infection.


Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.