How do I Know if I have Celiac Disease?

Celiac disease can only be diagnosed via a blood test or endoscopy. One reason for this is that the symptoms of celiac are also symptoms of other autoimmune disorders/illnesses; celiac disease should not be self-diagnosed!

If your doctor suspects you have celiac disease, he or she will prescribe a blood test. This will measure certain antibodies, usually  the tissue transglutaminase antibody (tTG). A result higher than 10 is considered proof of celiac disease, and will include a recommendation from your doctor to avoid all gluten or gluten-contaminated products.
Another method, endoscopy, is a biopsy inspecting the lining of the small intestine. In a healthy person, the small intestine will have tiny “hairs,” or villi. A person with celiac disease will have damaged or sparse villi. Your doctor should recommend both the blood test and an endoscopy, to confirm both that you do (or don’t) have celiac disease and to verify the amount of damage that’s been done.
Future blood tests should show decreasing and then negative signs of the antibody. In most individuals, the antibody level will reach below 10 six to twelve months after switching to a gluten-free diet.
Sources:
https://www.verywell.com/celiac-disease-blood-tests-562694
https://labtestsonline.org/understanding/analytes/celiac-disease/tab/test

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