{"id":335,"date":"2008-03-11T17:03:51","date_gmt":"2008-03-11T16:03:51","guid":{"rendered":"http:\/\/www.i-base.info\/qa\/?p=335"},"modified":"2024-10-14T09:15:40","modified_gmt":"2024-10-14T09:15:40","slug":"tests-and-figures","status":"publish","type":"post","link":"https:\/\/i-base.info\/qa\/335","title":{"rendered":"How do you interpret accuracy of HIV tests?"},"content":{"rendered":"<p>To your first question: yes, guidelines estimate that about 95% of people have HIV antibodies within about four weeks.<\/p>\n<p>To your second question: after 3 months, antibodies will be detectable in more than 99.999% of people who have been infected with HIV.<\/p>\n<p>To your third question: yes, you are right. At any time time between 30 an 90 days, the percentage will gradually increase from 95% to close to 100%. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>On this website, it has been stated that HIV antibodies are present in 95% of people within 30 days after infection.  Are they detectable by the antibody test at this stage also?<\/p>\n<p>Why then is it recommended that the test be carried out after 3 months?  Is this because after 3 months antibodies will be present in 100% of infected people? (give or take the odd very rare occurrence of people developing antibodies after this period)<\/p>\n<p>Am I right in saying that a negative antibody test 6 weeks after possible exposure to HIV would mean around a 98% chance that the person is not infected with HIV, given that antibodies would have developed (and would be detected) in about 98% of infected people by this stage ?<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,22],"tags":[],"class_list":["post-335","post","type-post","status-publish","format-standard","hentry","category-all-topics","category-hiv-testing"],"_links":{"self":[{"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/posts\/335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/comments?post=335"}],"version-history":[{"count":1,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/posts\/335\/revisions"}],"predecessor-version":[{"id":24260,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/posts\/335\/revisions\/24260"}],"wp:attachment":[{"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/media?parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/categories?post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-base.info\/qa\/wp-json\/wp\/v2\/tags?post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}