Tissue Transglutaminase Antibody IgA (tTg-IgA) test is used to find out celiac disease - an autoimmune disorder. This disease may be triggered by eating gluten in the diet. The test may be recommended if you have symptoms such as pain in the abdomen, diarrhea, and weight loss. Please find out the Tissue Transglutaminase Antibody IgA test price at HOD centre near you.