Guyz, it is a multi-billion $$ industry. The companies do research to find drugs that cannot be tested by "currently" known means. The THG Jones used was known in BALCO (the company which invented it and administered to numerous atheletes including baseball stars) as "The CLEAN" bcos it cud not be detected! Recently BALCO got busted and so all athletes under its umbrella came under suspicion. That is the only reason Jones involvment was found out. Watever said and done, the drug companies are alwaz a step ahead of anti-doping agencies. As simple as that. Poor indian athletes :)