Coeliac disease is an autoimmune disease where the lining of the small intestine is damaged by exposure to gluten (a protein found in grains such as wheat, rye, barley and oats) in genetically predisposed children and adults. The reaction to gluten causes inflammation and atrophy of intestinal lining, which can lead to malabsorption of nutrients and related health issues. The diagnosis of Celiac disease is classically based on a combination of findings from a patient’s clinical history, serologic testing and duodenal biopsies. SEROLOGY TEST: Serologic tests are for screening purposes and do not confirm the diagnosis of coeliac disease. Serologic tests for celiac disease include anti-transglutaminase IgA & IgG antibody, anti-endomysium IgA antibody, and Deamidated Gliadin Peptide IgA & IgG antibodies. The serologic tests that check for IgA antibodies are more sensitive for celiac disease than the tests for IgG antibodies. However, in people who have IgA deficiency, IgG test...