They have a physical test but I don't know about a Psych test. I do know however, that not all fighters get a drug test before a fight. Not to take anything away from Cambell, but he didn't get a drug test before he fought Diaz.
They should. Do they? I doubt it. Remember Lewis Vs Mccall II :crybby Maybe somebody should have checked out that wacko before letting him in the ring.