IOC, IAAF look at bright side of Tyson Gay, Asafa Powell doping cases

Updated: 15 July 2013 23:41 IST

In recent years, the IOC and International Association of Athletics Federations have focused on increased out-of-competition testing and storage of samples for retesting and retroactive sanctions. The IAAF and some other sports now use the blood passport system, which monitors an athlete's biological profile over time for signs of cheating.

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