Medicine A patient comes to hospital with a history of sore throat, diarrhoea and sexual contact 2 weeks before. The best investigation to rule out HIV is A P24 antigen assay B ELISA C Western blot D Lymph node biopsy 💡 Explanation A patient comes to hospital with a history of sore throat, diarrhoea and sexual contact 2 weeks before. The best investigation to rule out HIV is ✓ Correct Answer: A. P24 antigen assay