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Toxoplasma gondii IgG Antibody, Serum/plasma

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

This test checks for antibodies to the parasite *Toxoplasma gondii*, which can indicate past or current exposure to toxoplasmosis, a condition caused by the parasite.

Quick summary

["Knowing your exposure status helps guide preventive or treatment decisions if needed."]

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

Key facts at a glance

LOINC
30568-0
Short code
T gondii IgG CSF Ql IA
Synonyms
T gondii IgG CSF Ql IA
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82784
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What This Test Measures

The test detects IgG antibodies against *Toxoplasma gondii* in your blood. IgG antibodies are typically present after an infection has resolved, meaning you likely had exposure to the parasite at some point. This test does not measure active infection directly but provides historical exposure information.

Why It Might Be Ordered

Your healthcare provider may order this test if you have symptoms like fatigue, fever, or muscle pain that could be linked to past infection, especially if you have a weakened immune system. It may also be used before certain surgeries or procedures to assess exposure risk.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm to draw blood. If you’re pregnant or have a history of autoimmune diseases, discuss this with your doctor first.

What the Results Mean

Positive results suggest you’ve likely been exposed to *Toxoplasma gondii* at some point. Negative results mean no detectable antibodies were found, indicating no past exposure. Results alone don’t confirm current infection; they only show historical exposure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgG Antibody to Toxoplasma

Frequently asked questions

How long does it take to get results?
Results are typically available within 3–5 business days, depending on your lab’s processing time.
What does a positive result mean for my health?
A positive result means you’ve likely been exposed to the parasite in the past. It doesn’t mean you’re currently infected, but it may prompt further evaluation if you have symptoms or a weakened immune system.
Can I get this test if I’m pregnant?
Yes, this test is commonly ordered during pregnancy to assess exposure risk, though additional testing (like IgM) may be needed for active infection evaluation.
  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