有冇d 幫助出精架 haha 飲左酒之後做好耐都出唔到 >.<
另外 多謝 odmen 的回答(完全正確呀) ^^
以下係官方ge 回答:
the time between initial infection and a detectable antibody or virus level is called the window period, and (particularly for antibody detection) varies from person to person. A good rule of thumb for antibody testing is as follows:
around 50% of infected individuals seroconvert (develop a detectable antibody level) within 28 days of infection;
90 to 95% seroconvert within three months; and
more than 99% seroconvert within six months.
Therefore, if a person is tested for anti-HIV antibodies at 1 month and 3 months after exposure, they can be at least 90% certain that a negative result on both of those tests means that they are not infected. If they also re-test at 6 months, that confidence level goes up over 99%. There have been reports of individuals who took longer than 6 months to seroconvert, but those are so rare that they end up published as case reports in the medical literature!
Both the US Public Health Service (1, 2) and the World Health Organization (3) recommend testing immediately and again at six months following known or suspected exposure, with one or two additional re-tests in between.
Because you mentioned testing within hours of sex, it is important to point out that the recommended immediate test is meant to provide a baseline -- to establish that the person tested negative at the time of exposure. There are no tests that can reliably diagnose HIV infection within hours of exposure. If you suspect that you have been exposed to HIV, through sex or in any other manner, it is vital that you see a physician as soon as possible.
Here are a few online resources regarding HIV and HIV testing that may be of use to you:
http://www.cdc.gov/hiv/topics/basic/index.htm
http://www.avert.org/testing.htm
http://www.cdc.gov/hiv/topics/testing/resources/qa/index.htm
