I think the fact that we have to deal with doping allegations every year is beginning to tarnish the sport of cycling. Contador is a world-class cyclist regardless of his doping, therefore it is hard to simply dismiss him--people want to hear him out; however, at the same time, the doping rules are strict for a reason. Morever, the drug he tested positive for (Clenbuterol) is a bronchodialator. Its purpose is meant to make breathing easier, an obvious advantage for a cyclist. Contador argued that the amount of Clenbuterol was trace and its origins were contaminated health food. Clenbuterol has been known to be found in meat. Suppliers use the Clenbuterol to keep their meat lean; one who consumes this meat would test positive for trace amounts of Clenbuterol; however, the practice of feeding animals Clenbuterol has only been documented in cases in China involving pork.

In my opinion, the accused may be using food contamination as an attempt at a valid arguement. I dont believe it. Firstly, the test revealed trace amounts of Clenbuterol, suggesting that there was more in his system which was metabolized (evidence there was more than just trace amounts). Secondly, these cyclists are heavily monitored from their daily activity to the exact food they eat. I'm sure they consume some sort of specialized diet that contains higher nutrient value than normal food. For it to be contaminated with a bronchodialator? I dont know...

What i would like to know is of any of his crew, friends, or family had trace amounts of this drug as well. That could point to a potentially contaminated source. Additionally, i want to know how common Clenbuterol is used to keep farm animals lean.

Hope these insights help...

I think they are doing so much testing at this point that they are going to be picking up all sorts of misleading things from foods and over the counter drugs. Some drugs do persist, others don't.

Yes, if they thought he had been using drugs then second place would win; but, they would not do that if he passed the tests then and failed one now months later. He would just get a suspension.