A patient comes to hospital with a history of sore throat, diarrhea and sexual contact 2 weeks before. The best investigation to rule out HIV is –
Correct Answer: p24 antigen assay
Description: The p24 antigen can be detected during window period, during which antibodies are not demonstrated in the serum. So, used for early detection. The p24 antigen appears within 2 weeks (average 16 days) after infection. So, it is the best investigation to rule out HIV among the options given above. Note: Nucleic acid test (NAT) is the earliest test to become positive, (even before p-24 antigen detection) Test Average period after infection when test becomes positive Nucleic acid test p24 antigen test Antibodies test 12 days 16 days 22 days Western blot: It detects the HIV antibodies. A lymph node biopsy can confirm a diagnosis of AIDS-related lymphoma.
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now