Guys, enough with this HIV stuff. Even if he refuses to take a test...
If he fights in a sanctioned MMA or boxing match, he'll have to have bloodwork done before the fight, right?
So if he can prove he fought recently in a tested organization, that should prove he passed a test. Granted, nothing short of pics at the fight and a website listing results as well as blood policy will suffice, but it'll put this issue away once and for all.