You just about have to be there when the athlete is doping to catch them".
"We've come too far in the fight against doping to return to our past.
Spectators effectively now have to be doping to believe the Olympics.
A recent inquiry by the Dutch national doping agency estimated doping to be "between 14 and 39 per cent".
Many races do not allow athletes who have been caught doping to accept prize money or free room and board.
Slowly and methodically, she exposed every aspect of corruption in professional cycling, from doping to gross gender inequality.
The investigation, code-named "Operation Greyhound," has involved extensive wiretapping and has stretched beyond doping to try to uncover suspected money laundering and tax evasion.
All the talk was again about Lance Armstrong and the former teammates who have publicly accused him of doping to win the Tour de France.
"It's unacceptable to take the attitude that winning is everything, and to try anything from doping to fielding underage athletes to get it," Mr. Zhang said, referring to excesses of the state sports machine.
"We know some cyclists use doping to win competitions, we can't catch every one," Bordry added, noting that the battle to catch cheats required a never-ending effort to keep up with new doping techniques.
Drug screening conducted out of competition is considered the only reliable way of detection, because the testing is done when athletes are most likely to be doping to help recover from injury and build muscle.
