The test most commonly used for the initial screening of a blood sample for HIV infection is
Correct answer: A. ELISA
- A. ELISA
- B. Widal test
- C. ABO blood grouping
- D. Routine urine analysis
Explanation
ELISA detects antibodies against HIV and is cheap and sensitive enough for mass screening, with a positive result confirmed afterwards by a more specific test such as Western blot. It can miss a very recent infection, because during the window period of a few weeks the antibodies have not yet been made. The Widal test is for typhoid and has nothing to do with HIV.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About AIDS and HIV Infection
HIV is a retrovirus that infects CD4 T lymphocytes and gradually weakens immune function, while AIDS is the advanced syndrome caused by severe immune deficiency. Coverage includes viral transmission, replication, disease progression, opportunistic infections, diagnosis, prevention and the difference between HIV infection and AIDS.
Practise Acellular Life
342 free Acellular Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More AIDS and HIV Infection questions
An HIV positive person is said to have developed AIDS when
Which of the following is NOT a route by which HIV is transmitted?
HIV is classified as a retrovirus because it
Which infection is a typical opportunistic infection in a patient with AIDS?
Anti retroviral drugs such as zidovudine (AZT) slow the progress of HIV infection by
Numerous opportunistic diseases might attack a person suffering from which of the following diseases: