This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': "Highly specific and sensitive test for diagnosing kalaazar: March 2010 \nSelect and explain. \nA. Complement fixation test with WKK antigen, B. Napier's aldehyde test, C. Chopra's antimony test, D. Immunofluorescent antibody test", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. D: Immunofluorescent antibody test The direct agglutination test (Immunofluorescent antibody test) for anti-leishmanial antibody has been found to be highly specific and sensitive for diagnosing kal-azar. Complement fixation test with WKK antigen, Napier's aldehyde test and Chopra's antimony test is also positive in some other conditions like TB and leprosy", 'role': 'assistant'}]