Foreign agents cannot work in the country for at least six months while investigations are taking place.
How does Shalane Flanagan deal with the reality that the playing field may not be level?
New online tool provides the most up-to-date information on current and past drug cheats.
All aspects of the testing program will be coordinated by the IAAF Medical & Anti-Doping Department.
The reigning Chicago and Boston Marathon champion will be eligible to compete again on Oct. 30, 2016.
The Kenyan marathoner faces a ban from competition and elimination of her recent results.
Doping and extortion scandal could have widespread implications for the Russian athletics federation.
Rita Jeptoo's agent speaks on his athlete's failed drug test and discusses the depth of Kenya's doping problem.
The Kenyan was tested in late September before defending her Chicago Marathon title.
Do you know what's really in your sports nutrition supplements?