$15.00
Priced per marker, with baseline labs included. You’ll see your total before you pay.
Autoimmune & inflammation
Gliadin antibody (IgG) test
Celiac disease antibody; more useful than older anti-gliadin tests and especially helpful in IgA-deficient patients.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
Gliadin is part of gluten, the protein in wheat, barley, and rye. Antibodies against it can point to celiac disease, and the test works best while you’re still eating gluten.
Why it matters for women
Celiac disease is found more often in women, and it doesn’t always cause stomach trouble. It can show up instead as low iron that keeps coming back, early bone thinning, or trouble getting pregnant. This test can be especially helpful for people with low IgA, which can be more common in celiac disease.
You might check it if…
- your IgA is low and you’re being checked for celiac
- you get bloating, diarrhea, or belly pain after eating
- your bones are thinning earlier than expected
What your result may mean
High Gliadin antibody (IgG): what it may mean
High deamidated gliadin IgG may point to celiac disease, when gluten can trigger the immune system to damage the small intestine. This test can be especially helpful in people with low IgA, since the standard tTG IgA test can look normal in them. In women, celiac disease can appear as low iron, early bone thinning or trouble getting pregnant, and some may have bloating, diarrhea or no gut symptoms at all. tTG antibodies and a small-bowel biopsy can help settle the question.
Low Gliadin antibody (IgG): what it may mean
Low or negative deamidated gliadin IgG may ease concern about celiac disease, and it can't rule out non-celiac gluten sensitivity, which has no blood test that can find it. Eating little or no gluten before the draw can lower these antibodies, so the result may read falsely low. If bloating, low iron or other symptoms continue, a clinician may ask about your diet and may add tTG antibodies or genetic testing for celiac risk.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.