Tour de France 2013 ridden clean as no riders fail drugs test during cycling's showpiece
Cycling's governing body has revealed that no riders tested positive for doping in this year's Tour de France.
Last Updated: 23/08/13 5:33pm
The International Cycling Union (UCI) analysed 622 samples, including 203 taken from riders in training and 419 during the three-week race, which was won by Team Sky's Chris Froome.
Froome, like Sir Bradley Wiggins in 2012, was the subject of persistent questioning about doping during the race, but UCI anti-doping manager Francesca Rossi said: "We tested him a lot."
A total of 443 blood samples and 179 urine samples were taken.
Rossi added: "We don't have any adverse finding from the Tour de France. We changed the strategy. We were unpredictable and the riders perceived we were unpredictable."
The number of tests was an increase from the 2012 race, when 566 were carried out. Last year, Frank Schleck, of Luxembourg, tested positive for a banned diuretic.