Toxoplasma gondii IgG antibody (Serum)
This test checks for antibodies to the parasite Toxoplasma gondii in your blood. Antibodies indicate past or current exposure to the parasite, which can cause infections like toxoplasmosis.
["This test helps determine if you’ve been exposed to Toxoplasma, which can affect pregnant women or people with weakened immune systems."]
Key facts at a glance
- LOINC
- 8039-0
- Short code
- T gondii IgG Ser-aCnc
- Synonyms
- T gondii IgG Ser-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms like fever, fatigue, or muscle pain that could be linked to toxoplasmosis. They might also recommend it for pregnant women to check for exposure before or during pregnancy, or for people with conditions like HIV/AIDS or organ transplants to monitor immune health.
What to Expect Before the Test
You’ll typically have a simple blood draw from a vein in your arm. No special preparation is needed, but inform your provider about any medications you’re taking.
What the Results Mean
Positive results suggest you’ve had exposure to Toxoplasma at some point. The presence of antibodies doesn’t always mean you’re currently infected, but it indicates your body has developed immunity. Negative results mean no detectable antibodies were found in this test.
Common Symptoms of Toxoplasmosis
Symptoms may include flu-like illness (fever, chills, swollen lymph nodes), muscle pain, or headaches. Some people may not have symptoms at all, especially if their immune system is strong.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
IgG Antibody to Toxoplasma
Frequently asked questions
Toxoplasma gondii is a parasite that can cause serious complications in people with weakened immune systems, such as those with HIV/AIDS or undergoing chemotherapy. For pregnant women, exposure can pose risks to the developing fetus, so this test is often recommended during prenatal care.
A positive result means your body has developed immunity to Toxoplasma, which is generally protective. However, if you have a weakened immune system, you may still need to take precautions to avoid reinfection, such as avoiding raw or undercooked meat.
No, this test is performed in a clinical laboratory using a blood sample. You’ll need to visit a healthcare provider’s office or lab for the procedure.
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