Four teams underwent blood tests before Sunday's second stage of the Tour de France and all 36 riders were cleared to race, organizers said.
The French Anti-Doping Agency, which is handling all the tests in France this year, tested riders from Lampre, Team CSC, Columbia and Saunier Duval.
Because of a long-standing dispute between Tour organizers and the International Cycling Union, the UCI is not involved in any testing at this year's Tour.
