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Toxoplasma gondii IgG Antibody, Serum (Qualitative Immunoassay)

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of antibodies to the parasite *Toxoplasma gondii*, which can indicate past or current infection. Antibodies are your body’s immune response to exposure to this parasite.

Quick summary

["This test helps determine if you’ve been exposed to Toxoplasma, which can affect pregnancy, immune health, or certain medical conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
110929-7
Short code
T gondii IgG Msmt CSF
Synonyms
T gondii IgG Msmt CSF
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 doctor may recommend this test if you have symptoms like fever, muscle aches, or fatigue that could suggest infection, or if you have a weakened immune system. It’s also commonly checked during pregnancy to ensure safety for the baby. Rarely, it may be used to monitor chronic infections in people with HIV or other immune disorders.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. The test is usually done in a lab, and results are typically available within a few days.

What the Results Mean

A positive result means you likely have antibodies to Toxoplasma, suggesting past infection. A negative result means no detectable antibodies, which could mean you’ve never been exposed or the infection was cleared by your immune system. Always discuss results with your doctor.

Possible Side Effects

The most common side effect is a small bruise or mild soreness at the needle site. Rarely, you might feel lightheaded or dizzy during the blood draw.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgG Antibody to Toxoplasma

Frequently asked questions

What does a positive result mean for my health?
A positive result means you’ve likely been exposed to Toxoplasma in the past, but it doesn’t always mean you’re currently infected. If you’re pregnant, a positive result is monitored closely to ensure the safety of your baby. If you have a weakened immune system, it may indicate a history of infection that your body has managed, but you should still discuss further steps with your healthcare provider.
Can I get infected with Toxoplasma from food or household items?
Yes, Toxoplasma can be found in undercooked meat, unpasteurized dairy, or contaminated soil. It can also spread through contact with cat litter (especially if a cat is shedding oocysts). Washing hands, cooking meat thoroughly, and avoiding contact with contaminated surfaces can help prevent exposure.
How often should I get this test?
Your doctor will determine if and when you need this test based on your medical history, symptoms, or risk factors. For example, pregnant women may be tested during pregnancy, and people with HIV or other immune disorders might need monitoring more frequently depending on their health status.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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