The International Olympic Committee will retest samples from Olympic athletes for traces of a new drug, the BBC reports. Cera, a new version of a blood-oxygen-boosting drug, was found in a second look at samples from two Tour de France cyclists this week. Olympic policy allows additional testing for 8 years after a sample is given.
The new tests are likely to cover athletes from all sports, and the head of the UK's Drug-Free Sport team says he expects more positives to show up in this round. During the Olympics, six athletes were disqualified for doping, with three other cases still pending. The Tour de France is also retesting additional samples for Cera, which increases riders' stamina.