Babu, a 28 year old male comes with compaint of exposure 3 wks back, having cervical Lymphadenopathy, Hepatosplenomegaly. Diagnosis of HIV is done by____________?
Correct answer: C. P24 antigen
- A. ELISA
- B. Western blot
- C. P24 antigen
- D. Lymph node biopsy
Explanation
At three weeks after exposure, the patient may be in acute HIV infection before antibodies become reliably detectable, so p24 antigen is useful because it appears early. ELISA and Western blot mainly detect antibodies and may be negative during this window period.
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