Reply #127: Thats the problem with blanket bans...

[Solon]

You can't really trust anyone, not really, plus there is no guarantee for anything. The same questionnaire also says that women who had sex with men that had sex with men themselves cannot donate blood for 12 months. The major point here is that for many women, even married ones, there is no way to answer such a question since no one is omniscience unless it is an open relationship. Same could be said for men having sex with prostitutes, and their significant others, along with many other high risk behaviors.

The safest bet would be to either strap all donors to a lie detector for the questionnaire, or just let lesbians donate(lowest blood borne disease risk).