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': 'The best diagnostic test for recent hepatitis B is: \nSelect and explain. \nA. HBsAg, B. IgM anti-HBcAg, C. Anti-HBe, D. Anti-HBs', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) IgM anti-HBcAg Remember7 Best marker for diagnosing acute hepatitis B is IgM anti-HBc as it is found only in acute phase of hepatitis B (In chronic hepatitis IgG anti-HBc is found). First marker after acute hepatitis B infection is HBsAg but as it can be found in chronic infection too so, it is not reliable of acute infection. So, Guys be clear: Diagnostic marker of acute hepatitis B: IgM anti-H13,- Earliest marker of acute hepatitis B:', 'role': 'assistant'}]