Paris - The World Anti-Doping agency has praised the testing at this year's Tour de France but wants cycling's governing body to be more aggressive and less rider-friendly.
WADA sent observers to monitor testing by the International Cycling Union. Alberto Contador won for the third time.
The Spaniard, however, has been provisionally suspended by the UCI after testing positive for the banned drug clenbuterol and could lose his title.
WADA says in a report published on Thursday that the UCI ran thorough tests but was too friendly with some riders, adding that more riders should be taken out of their comfort zone and tested late at night.
It also says the UCI should centralise managing the results rather than delegating to national federations.