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Walnut Creek, CA
A 23-year-old female asked:

How long does it take for gluten to exit out of your system completely if testing if gluten free diet helps? is oatmeal ok? what to know about gluten?

2 doctor answers2 doctors weighed in
Dr. Justin Greiwe
A Verified Doctoranswered
A US doctor answeredLearn more
Celiac Disease: Celiac disease (gluten-sensitivity) presents with villous atrophy, malabsorption, weight loss (signs of nutrient or vitamin deficiency). Resolution of the mucosal lesions and symptoms after withdrawal of gluten-containing foods (usually within a few weeks to months). Blood test can determine if you have this condition. Gluten-free products are clearly labeled. Pure oatmeal does not contain gluten.
Dr. John Chiu
Allergy and Immunology 57 years experience
Probably a week: Most gluten would be gone in less than a day but to be totally free may take longer. Blood test for gluten sensitivity is unreliable if done on a gluten-free diet. Gluten is present in wheat, barley, and rye. Oat is ok if grown in fields uncontaminated by gluten-containing crop. About 1% of the population is gluten sensitive but studies suggest that non-celiac gluten intolerance can be present.
Dr. John Chiu
Dr. John Chiu commented
Allergy and Immunology 57 years experience
Provided original answer
For the blood test (IgA tTG) to be reliable, you need to be on a regular diet with gluten for about 3 weeks before the test should be considered.
Jul 21, 2015

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Last updated Oct 14, 2017

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