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T. gondii IgG Antibody, Serum

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

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

Quick summary

["This test helps determine if you’ve been exposed to Toxoplasma, a parasite that can affect the brain or other organs."]

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

Key facts at a glance

LOINC
60428-0
Short code
T gondii IgA Titr Ser
Synonyms
T gondii IgA Titr Ser
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 doctor may order this test if you have symptoms like fever, fatigue, or muscle pain, or if you’ve recently traveled to areas with high parasite risk. It’s also used to check for exposure in pregnant women or those with weakened immune systems.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test is quick and typically done in a lab setting.

What the Test Measures

The test detects IgG antibodies, which develop after your body has fought off the parasite. These antibodies stay in your system long after infection has cleared.

What the Results Mean

A positive result means you’ve likely been exposed to Toxoplasma at some point. A negative result suggests no recent or past exposure, but it doesn’t rule out past infection if testing was done too early.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

IgG antibodies to Toxoplasma are important for diagnosing past infection. In some cases, like in pregnant women or immunocompromised individuals, further testing (such as IgM or parasite detection) may be needed to assess active infection or risk of complications.

Short name

IgG Antibody to Toxoplasma gondii

Frequently asked questions

How long does it take to get results?
Results are usually available within 1 to 3 business days, depending on lab processing times. Your doctor will discuss the findings with you during your follow-up visit.
Can I get this test at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home collection kits are not available for this specific test.
What if my results are positive?
A positive result means you’ve been exposed to Toxoplasma, but it doesn’t always mean you’re currently sick. If you’re pregnant or have a weakened immune system, your doctor may recommend additional testing or monitoring to check for active infection.
  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