p24 antigen disappears from the blood after how many weeks in HIV -: (A) 2-4 weeks, (B) 4-6 weeks, (C) 6-8 weeks, (D) 8-10 weeks
Answer is C. Ans. is 'c' i.e., 6-8 week . Low level of circulating HIV-1 p24 antigen can be detected in the plasma by EIA soon after infection. . The antigen often becomes undetectable after antibodies develop (6-12 weeks following infection). . p-24 antigen reappear late in the course of infection indicating a poor prognosis.