This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Malabsorbtion Syndrome, Subject name: Medicine
[{'content': 'The following tests can be used for diagnosing celiac disease except: \nSelect and explain. \nA. Anti - gliadin antibodies, B. Anti - ulcer antibodies, C. Anti- Endomysial antibodies, D. Anti-tissue transglutaminase antibodies', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Antibody testing, immunoglobulin A anti-tissue transglutaminase antibody (IgA TTG), is the best first test, The most sensitive and specific antibodies for the confirmation of celiac disease are Anti tissue transglutaminase IgA, Anti endomysial IgA, Anti reticulin IgA , correlate with the degree of mucosal damage. Anti-gliadin antibodies were one of the first serological markers for coeliac disease.', 'role': 'assistant'}]