In the statement on Thursday, Contador's press officer said the rider was first made aware of the test by the UCI (Union CyclisteInternationale) on 24 August.
Mr. Armstrong denied to Ms. Winfrey the accusation that he paid off the UnionCyclisteInternationale, the sport's international governing body, to get out of a positive test at the 2001 Tour de Suisse.
In 1996, the UnionCyclisteInternationale (UCI) published the Lugano Charter which drew up narrow guidelines on bicycle design, and in 2009 the swimming world governing body FINA outlawed Speedo's LZR Racer swimsuit (launched in 2008) after world records were routinely broken.
Hours ago, the UnionCyclisteInternationale (UCI) announced that it is standing behind a report previously published by the U.S. Anti-Doping Agency (USADA) alleging that seven-time Tour de France winner Lance Armstrong oversaw the most sophisticated doping program in the history of sport.