From the above link it shows that p24 turns +ve up to 6 weeks...
According to Teaks post p24 shows positive up to 4th week and after that it turns -ve
am i correct....
ie p24 shows positive up to 4th week and after that it turns -ve am i correct.
Teak,
Do you think a 'p24 Antigen/Antibody Combi' test is beneficial at 3-6 weeks? I found this info:
http://www.roche-hiv.com/portal/eipf/pb/hiv/Roche-HIV/first-line_diagnosis
Interesting graph they have on p24, antibody etc.
From this, it seems people who take a p24 Ag/ab will benefit from an early diagnosis. Or is this Pharma/Manufacturer's Mkt Strategy?
What do you think? Of course a repeat test later (12-13 weeks) is conclusive, no denying. You comments please.
sony007 - Did you get a ag/ab combi test?
The p24 Antigen Test
The p24 antigen test identifies actual HIV viral particles in blood (p24 is a protein specific for HIV). However, the p24 antigen test is generally only positive from about one week to 3 - 4 weeks after infection with HIV. The p24 protein cannot be detected until about a week after infection with HIV, because it generally takes that long for the virus to become established and multiply to sufficient numbers that they can be detected. The p24 antigens then become undetectable again after sufficient antibodies to HIV have been produced, because they bind to the P-24 protein and eliminate it from the blood. Once antibodies are produced, the p24 test will register negative even in people who are infected with HIV. Of course, at that point the regular HIV antibody test will then be positive.
The p24 antigen test has very limited value in diagnosing HIV infection. It has been used in HIV research and, since 1996, has been used as an additional screening test in blood banks to help reduce the window period and reduce the possibility of HIV infected blood being used in transfusions.
Most people will not benefit from having a p24 antigen test. People who have engaged in behaviors that may have put them at increased risk of infection with HIV.
but when i consult a doctor here (INDIA) he told me to take p24 that's why i took it and told that the test will be 99% accurate.. but when i ask abt the time limit he told me there is no time limit for it..once the antigen is detected it willnot go away so it will be detected in p24 at any time..
anyway
1) i think i had taken the test in the correct time is'nt it?
2)should i want to test for another?
3)how much my test is accurate?
pls reply