This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis Viruses, Subject name: Microbiology
Recent hepatitis infection is best diagnosed by: 
Select and explain. 
A. HBsAg, B. IgG Anti HBe abs, C. Anti HBsAg abs, D. IgM anti HBc abs
D: IgM anti HBc abs
Answer: D: IgM anti HBc abs 
Explanation: Ans. is 'd' i.e., IgM anti HBc abs(Ref: Ananthanarayan, 9th/e, p. 548 and 8th/e, p. 544)* HBsAg is the first marker to be elevated and Anti HBc.- IgM appears within 1 - 2 weeks after the appearance of HBsAg and lasts for 3 - 6 months.* Diagnostic tests in recent hepatitis B infection are HBsAg detection and HBc.- IgM and overall best is to look out for IgM anti HBc.