Even if they are, they are bound to use it in ways, or during times that allow them to pass checks. If everything was flat out allowed they would use stuff that would never pass those tests in far higher concentrations.

While the deaths due to complications seem to be overblown in bodybuilding circles and the overall safety of performance enhancing drugs seems to be rather high it leaves to wonder if that would still be true if athletes would just use everything there is out there. Seeing that bodybuilders probably don't care about endurance, power, nutrient retention and the thousand ways the whole oxygen and glycogen supply chain can be screwed with.