Quick Reference
- Full form
- Anti Tissue Transglutaminase, IgG (tTG-IgG)
- Sample type
- Blood
- Fasting
- Not required
- Marker measured
- 1
- Report turnaround
- After 3 days
- Available at
- All locations
About Anti Tissue Transglutaminase (IgG)
Anti tTG IgG is used alongside the IgA version, especially useful for patients with low overall IgA levels where the primary test could otherwise miss a celiac diagnosis. Together, they give a more complete picture.
No fasting is required, though continuing your normal gluten intake before testing is important for accuracy.
How to Prepare
- No fasting required.
- Keep eating gluten as usual before testing.
Frequently Asked Questions
Why is the IgG version needed alongside IgA?
It helps catch celiac disease in patients with naturally low IgA levels, where the primary IgA test alone could give a false negative.
Should I avoid gluten before this test?
No, keep eating gluten normally beforehand for an accurate result.
Do I need to fast before this test?
No fasting is required.
Is this test used for adults and children?
Yes, it is used for both, particularly when celiac disease is suspected at any age.
How soon will my report be ready?
After 3 days.
Is home sample collection available?
Yes, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.