几个小时前的:
"And as for timing of test results in relation to exposure, all the debate and discussion about 6 weeks or 3 months or longer is valid ONLY for the antibody tests. The COMBINATION of a negative viral test (like DNA by PCR) in the first few weeks plus negative antibody test at 4 weeks or more after exposure is 100% reliable. There has never been a proved exception, to my knowledge. "
( http://www.medhelp.org/posts/HIV-Prevention/Dr-Hook--oral-sex-and-testing-results/show/1688050#post_7711850 )