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Toxoplasma gondii IgG antibody (Serum)

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

This test checks for antibodies to the parasite *Toxoplasma gondii*, which can cause infections like toxoplasmosis. Antibodies indicate past exposure or immunity.

Quick summary

["Past exposure to Toxoplasma may mean you’re protected, but results don’t confirm current infection."]

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

Key facts at a glance

LOINC
93859-7
Short code
T gondii IgG Ser Donr Ql IA
Synonyms
T gondii IgG Ser Donr Ql IA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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 pain, or swollen lymph nodes, especially after exposure to undercooked meat, cat litter, or contaminated food. It’s also used to check for immunity before certain surgeries or organ transplants.

What the Results Mean

A positive result means your body has made antibodies to Toxoplasma, suggesting past infection. A negative result means no detectable antibodies, so you may not have been exposed recently. Results don’t show if you’re currently infected.

What to Expect Before the Test

No special preparation is needed. A blood sample is taken from a vein in your arm. You may feel a slight pinch, but it usually takes only a few minutes.

What to Expect After the Test

You can return to your normal activities immediately. There’s usually no downtime, but mild bruising or soreness at the injection site may occur.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High IgG levels indicate immunity from past infection, which can be protective. However, a positive result doesn’t rule out latent infection, which may reactivate in immunocompromised individuals. This test helps guide decisions about preventive measures or treatment plans.

Short name

IgG Antibody to Toxoplasma

Frequently asked questions

What does a positive IgG result mean?
A positive IgG result means your immune system has recognized Toxoplasma in the past, but it doesn’t confirm whether you’re currently infected. You may be protected from future infections, but doctors may still monitor you if you have a weakened immune system.
Can I get this test at home?
No, this test requires a blood sample collected by a healthcare provider in a clinical setting. Home tests for parasites are not typically available for this specific antibody test.
How long does it take to get results?
Results are usually available within 24 to 72 hours, depending on your lab’s processing times. Your doctor will contact you with the results once they’re ready.
  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