Tissue Transglutaminase (tTG) Antibody IgG Test
Short Name: tTG IgG Test
Also known as: tTG IgG Antibody Test, Celiac Disease Screening Test, Anti-Tissue Transglutaminase IgG Test
Tissue Transglutaminase (tTG) Antibody IgG Test test available at DNA Labs India for ₹1,170. Uses Enzyme Immunoassay on Serum samples. Results in Same-day results available for samples received by 9 AM Thursday; reports delivered via online portal, email, or WhatsApp.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SHAILAJA RAGHUNATH MURDESHWAR
Consultant Physician · Reg: 8052
Last reviewed: September 7, 2026
Overview
To diagnose celiac disease and dermatitis herpetiformis, monitor adherence to a gluten-free diet, and assess for gluten-related autoimmune conditions.
- Test Code
- 1443
- Price
- ₹1,170
- Sample Type
- Serum
- Result Time
- Same-day results available for samples received by 9 AM Thursday; reports delivered via online portal, email, or WhatsApp.
- Fasting Required
- No
- Method
- Enzyme Immunoassay
Sample Collection
No special preparation required
Method: Venipuncture
Laboratory Analysis
A healthcare professional will draw a blood sample from a vein in your arm using standard phlebotomy procedures.
Report Delivery
Apply pressure with a bandage to the puncture site to stop bleeding. Normal activities can be resumed immediately.
Timeline: Same-day results available for samples received by 9 AM Thursday; reports delivered via online portal, email, or WhatsApp.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose celiac disease and dermatitis herpetiformis, monitor adherence to a gluten-free diet, and assess for gluten-related autoimmune conditions.
How to Prepare
- Sample must be refrigerated or frozen during transport to maintain stability
Doctor's Notes
Reviewed by Dr SHAILAJA RAGHUNATH MURDESHWAR — MBBS, MD (General Medicine) · Reg. No. 8052
"The tTG IgG test is essential for diagnosing celiac disease, especially in patients with IgA deficiency, and helps monitor dietary compliance."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or lipemic sample
- Insufficient sample volume (< 1 mL)
- Improperly stored or labeled sample
Understanding Your Results
Negative (< 20 U/mL)
No tTG IgG antibodies detected, suggesting no active celiac disease or successful adherence to a gluten-free diet.
Weak Positive (20-30 U/mL)
Borderline levels; further testing with tTG IgA or DGP antibodies, or repeat testing after gluten challenge, may be recommended.
Positive (> 30 U/mL)
Elevated tTG IgG antibodies indicate likely celiac disease or dermatitis herpetiformis; confirmation with endoscopy and biopsy is advised.
Consult your doctor if your test results are positive, if symptoms persist despite a gluten-free diet, or if you have a family history of celiac disease.
Limitations
- ⚠tTG IgG test may have lower specificity compared to tTG IgA in patients with normal IgA levels
- ⚠Results alone cannot confirm celiac disease; endoscopy and biopsy are often required for definitive diagnosis
Risks & Considerations
- ●Minor bruising or soreness at the puncture site
- ●Rarely, dizziness or fainting during blood draw
- ●Extremely low risk of infection
Interfering Factors
- ●Recent gluten intake may affect antibody levels
- ●Other autoimmune conditions can cause cross-reactivity
- ●Immunosuppressive medications may alter results
Compare With Similar Tests
| Test | Tissue Transglutaminase (tTG) Antibody IgG Test | tTG IgA Antibody Test | Anti-Endomysial Antibody (EMA) Test | Deamidated Gliadin Peptide (DGP) Antibody Test |
|---|---|---|---|---|
| Comparison | Tissue Transglutaminase (tTG) Antibody IgG Test |
Frequently Asked Questions
What is the tTG IgG test?
Why is this test done?
How is the tTG IgG test performed?
Is fasting required for the tTG IgG test?
What do the results mean?
How accurate is the tTG IgG test?
What is the cost of the tTG IgG test in India?
Is home collection available for this test?
How long does it take to get the results?
Can this test be used to monitor a gluten-free diet?
What is the difference between tTG IgG and tTG IgA tests?
Should I stop eating gluten before the test?
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