[toussaints]

I wonder if the schools are responsible for drug testing and not the NCAA. If so, that could be the reason.

The only time the NCAA is fully responsible for drug test are at championship events. The school is responsible to report the results of any drug test recommended by the NCAA.

And an athlete can easily fail the drug screen if they're not careful. They screen for all chemicals related to the banned substance list. Some sport drinks like VitaminWater have a chemical in it linked to cocaine. Most of the time, the athlete just used drugs.

Kentucky is fairly lax when it comes to disciplining athletes for failed drug test, mainly due to the high volume of vitamins taken by the athletes. Louisville is the same, but takes a harder stance on alcohol