DOPING TIME BOMB: A German TV report claims IAAF involved in a cover-up of doping by 225 athletes including 25 Kenyans

Rita Jeptoo of Kenya reacts after crossing the finish line to win the women's race during the Chicago Marathon on Sunday, Oct. 12, 2014, in Chicago. Chicago's 37th annual race included a field of 108 elite men, women and wheelchair athletes. There were also 45,000 amateur runners registered and more than 1 million people were expected to watch along the way.(AP Photo/Andrew A. Nelles)

The true scale of athletics’ alleged doping cover-up can be laid bare following detailed analysis of the list of competitors with “suspicious” blood values that has sent shock-waves through the sport.

Telegraph Sport has been shown copies of the full documents exposed this week by German broadcaster WDR, which accused the International Association of Athletics Federations of failing to act on its own findings in around 150 cases of abnormal readings.