Toxoplasma gondii IgG Antibody (Serum/Plasma)
This test detects antibodies in your blood that your immune system produces in response to the parasite *Toxoplasma gondii*. It helps determine if you’ve been exposed to the parasite, which can cause infections like toxoplasmosis.
["This test helps assess past exposure to Toxoplasma, a parasite that may pose risks during pregnancy or in immunocompromised individuals."]
Key facts at a glance
- LOINC
- 31181-1
- Short code
- T gondii IgM CSF Ql
- Synonyms
- T gondii IgM CSF Ql
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may order this test if you have symptoms like fever, fatigue, or muscle pain that could suggest an infection. It’s also commonly checked during pregnancy to ensure safety for the baby, or in people with weakened immune systems (e.g., due to HIV, chemotherapy, or organ transplants).
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. If you’re pregnant, let your provider know before the test to ensure safe handling of the specimen.
What the Results Mean
A positive result means your body has produced antibodies against Toxoplasma, indicating past exposure. A negative result suggests you haven’t been exposed recently, but this doesn’t guarantee you’re immune forever. Results are interpreted by your healthcare provider based on your medical history and symptoms.
Common Reasons for Testing
This test is often used to diagnose or monitor toxoplasmosis, especially in high-risk groups. It can also help guide treatment decisions or screen for congenital toxoplasmosis in newborns (if maternal exposure is suspected).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Toxoplasma infection can cause serious complications, particularly in pregnant women (risk of birth defects) or people with weakened immune systems (risk of severe illness). While most people with past exposure don’t experience symptoms, ongoing testing may be needed if you’re at higher risk. Always discuss results with your provider to understand next steps.
Short name
IgG Antibody to Toxoplasma
Frequently asked questions
What does a positive result mean?
Can I get this test if I’m pregnant?
How long does it take to get results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy