Claim: Doping at the World Athletics Championships is looked for with sampling of athletes blood and urine, if found the athletes performance will be annulled.
Evidence: The IAAF and anti-doping bodies undertake in-competition sampling of athletes blood and urine in order to detect where athletes have taken banned substances. Where an out-of-competition sample tests positive for a banned substance, any performances by the athlete after that date may also be annulled.