A 25-year-old gentleman presented with a 10 days history of fever sore throat and lymphadenopathy. He also had hepatosplenomegaly. His Hb was 14g/dl, few atypical lymphocytes were seen on peripheral smear. LFTs were also deranged. What test should be performed next?

A 25-year-old gentleman presented with a 10 days history of fever sore throat and lymphadenopathy. He also had hepatosplenomegaly. His Hb was 14g/dl, few atypical lymphocytes were seen on peripheral smear. LFTs were also deranged. What test should be performed next?

Explanation

The next test to perform is Epstein-Barr virus (EBV) infection.

This is because the presentation of fever, sore throat, lymphadenopathy, hepatosplenomegaly, atypical lymphocytes, and deranged LFTs suggests infectious mononucleosis, commonly caused by EBV.