Could bad meat cause a positive drug test?

Medical experts are divided over whether bad meat could result in a positive finding in a doping test.

Reigning Tour de France champion Alberto Contador was provisionally suspended Thursday from competitive cycling by the sport's governing body, the Union Cycliste Internationale (UCI), after trace amounts of clenbuteral were found in the analysis of a urine sample taken during an in-competition test on July 21.

"It is a food contamination case of which I am the victim," the cyclist said, adding that the result was due to bad meat he and several other riders had eaten the day before the urine test.