Not sure what the exact drug is, but SI is reporting B.J. Raji failed his Combine drug test. He tested positive for marijuana at BC so it might not have been a steroid test he failed. Either way it should hurt his draft stock.
According to the NFL's drug policy, a positive test for street drugs, which includes marijuana, puts a player into the initial stage of the NFL's drug program. He's then subject to random testing and subject to a fine or suspension if he tests positive again.
For those that don't remember, Warren Sapp saw his draft stock plummet after he tested positive for marijuana. Two questions: 1) How far does he drop? 2) Would you trust drafting him if he was there at 10 now?
Much much more to come on this.