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Trypanosoma cruzi IgG Immunoglobulin G Antibody, Serum

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

This test detects antibodies to the parasite *Trypanosoma cruzi*, which can cause Chagas disease. It helps determine if you’ve been exposed to the parasite.

Quick summary

["This test checks for past or ongoing exposure to the parasite that causes Chagas disease."]

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

Key facts at a glance

LOINC
111003-0
Short code
T cruzi IgM Msmt Ser
Synonyms
T cruzi IgM Msmt 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 healthcare provider may order this test if you have symptoms of Chagas disease, such as fatigue, digestive issues, or heart problems, or if you live in or traveled to regions where the parasite is common. It may also be used to monitor treatment or diagnose suspected infection in people with risk factors.

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 clinic or lab.

What the Test Results Mean

Positive results indicate the presence of antibodies, suggesting past infection. Negative results mean no detectable antibodies, which may mean you’ve never been exposed or the infection has cleared. Results alone don’t confirm active disease; they’re often used alongside clinical findings.

Common Symptoms of Chagas Disease

Chagas disease can cause symptoms ranging from mild to severe. Early signs may include fever, swelling, or digestive issues. Later stages can affect the heart or nervous system, leading to long-term complications like heart failure or digestive disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Trypanosoma cruzi IgG Antibody

Frequently asked questions

What Does This Test Measure?
This test measures the level of IgG antibodies against *Trypanosoma cruzi*, a parasite transmitted by blood-sucking insects. Antibodies develop after infection and can persist for years, helping diagnose past exposure.
How Is This Test Different from Other Tests?
Unlike some tests that check for active infection (e.g., direct parasite detection), this test looks for evidence of prior exposure. It’s often used alongside other tests to confirm diagnosis or assess exposure risk.
Can This Test Be Used for Routine Screening?
No, this test is not typically used for routine screening in the U.S. It’s usually ordered based on symptoms, travel history, or risk factors for Chagas disease.
  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