Professor David Cowan, speaking at the British Science Festival in Bradford, has spoken of a new test to detect autologous blood doping among sport cheats. This is the practice of transfusing the athlete’s own blood back in to their body before an event in order to enhance their performance. To date, autologous blood doping has been undetectable. WADA (World Anti-Doping Agency) have succeeded in developing a test based on differences in blood cell surface antigens, which led to a successful case against a cyclist at the Athens Olympics, but this has limited applicability. Prof Cowan’s work would widen detectability and greatly reduce the number of offenders.