Madrid: Tour de France champion Alberto Contador has reiterated his threat to quit cycling if he is punished over a failed doping test.
"It`s early to say it right now... but I cannot assure you that I would continue," the three-times Tour winner said in an interview with Spanish television on Thursday.
The 27-year-old has blamed meat bought in Spain and eaten on the 2010 Tour`s second rest day for the traces of the banned substance clenbuterol found in his urine sample.
He has been provisionally suspended by the International Cycling Union (UCI), faces a possible two-year ban and could lose his 2010 Tour title.
He repeated his innocence on Thursday and added that he hoped for a decision from the Spanish Cycling Federation (RFEC) on his fate before the end of the year.
"I have not doubted even for a single second because at no time did I do anything irregular," he said.