Chris Froome failed a doping test during the Spanish Vuelta in September and is facing a suspension from cycling ahead of his attempt to win a record-equaling fifth Tour de France title next year.
Froome won his fourth Tour title this year and followed it with a victory at the Vuelta. But Team Sky said Wednesday that Froome, who has not been suspended, had a concentration of asthma drug salbutamol two times higher than the World Anti-Doping Agency's permitted levels.
"Analysis indicated the presence of salbutamol at a concentration of 2,000 nanograms per milliliter (ng/ml), compared with the WADA threshold of 1,000 ng/ml," Team Sky said .
Team Sky said it...