T. gondii IgG Antibody (Serum/Plasma) - Immunoassay
This test checks for antibodies to the parasite *Toxoplasma gondii*, which can cause infections like toxoplasmosis. It helps determine if your body has ever been exposed to this parasite.
["This test helps assess past exposure to Toxoplasma, a parasite that may affect pregnancy or immune health."]
Key facts at a glance
- LOINC
- 5391-8
- Short code
- T gondii IgM Titr SerPl IF
- Synonyms
- T gondii IgM Titr SerPl IF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- 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
Doctors may order this test if you have symptoms like fever, muscle aches, or fatigue that could be linked to a Toxoplasma infection. It’s also commonly checked during pregnancy to ensure the baby isn’t at risk. Additionally, people with weakened immune systems may need this test to monitor for infections.
What to Expect Before the Test
You’ll typically have a small needle inserted into your arm to draw blood. The process takes just a few minutes, and you may feel a brief pinch. No special preparation is needed, but let your doctor know if you’re on blood-thinning medication or have a bleeding disorder.
What the Results Mean
If you test positive for *T. gondii* IgG antibodies, it means your body has likely been exposed to the parasite at some point. This doesn’t always mean you’re currently sick, but it indicates past infection. If you’re pregnant or have a compromised immune system, this result may prompt further testing or monitoring.
Common Reasons for Testing
Pregnant individuals are often tested for Toxoplasma antibodies early in pregnancy to check for exposure, as the parasite can cross the placenta and affect the fetus. People with HIV/AIDS, organ transplants, or other immune conditions may also need this test to prevent severe infections.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
IgG Antibody to Toxoplasma gondii
Frequently asked questions
What symptoms might indicate you need this test?
How long does it take to get results?
Can I get this test at home?
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