All those that died were WWE only guys - TNA wrestlers haven't died
that suggests there is a policy there - even if it's not out loud and proud
simply not giving the title shot to a guy who is cheating solves the problem
no incentive to do drugs = drug free sport
Simply coz their champions are smaller guys is not a reason to say no-one does drugs here.
If you are clean, what do you have to hide.
Have an independant drugs testing program which means that 5 wrestlers are tested once a quarter.... but because they don't know when, its effective.
A couple of bad eggs could lead to negative publicity at a time when TNA are trying to gain fans by word of mouth and quality shows and need everything running smoothly.