Re: Why 6 Weeks HIV test considered conclusive in some countries and US states
The only reason why a 4 - 6 week HIV test can in some instances be considered conclusive is if it's a 4th generation antibody/antigen test these tests aren't offered everywhere. Like I stated in your other thread their are circumstances where testing is warranted at 3 and 6 months post exposure these include PEP, Agammaglobulinemia, a known exposure to an HIV infected individual, etc....
If 4-6 weeks was truely conclusive in virtually all cases their wouldn't ever be the need for testing at 3 and 6 months post exposure their are discrepancies due to certain circumstances.
Part of the "conclusiveness" of these tests is reflected on the fact almost all people who get tested and know their exact date are worried about an unprotected exposure when they actually never came into contact with the HIV virus. A very high % of people show up positive on an HIV test 4-8 weeks post exposure but at the same time it's far from everyone so factoring this all in it's reasonable in many instance so say that test result was conclusive but that's not the case all the time.
he is an part on an article on HIV-1 Strain Surveillance in Canada
"1. Improve HIV Diagnostics and Screening Strategies
The broad genetic diversity of HIV has implications for the ability of diagnostic tests to reliably detect circulating HIV strains.3,4 The sentinel arm of the CHSDRSP, through the reference services of the National HIV Laboratories, addresses this goal by testing samples with unusual test results. Based on the knowledge of circulating HIV strains, modifications can be made to current tests to ensure that all HIV-positive persons are detected upon testing. This is also relevant for ensuring the safety of the blood supply, since the tests used for screening donated blood should be able to detect circulating HIV variants."
Last edited by missingyou; 07-11-2010 at 09:17 PM.