The use and abuse of performance enhancing drugs (doping) is rife in professional sport. The detection of doping is an extremely important task because it ensures athletes’ safety. It also maintains standards of acceptable training practices, whatever they are determined to be. In 2007, successes and key challenges in doping detection involved anabolic steroids and peptide hormones. Genetic doping is expected in the not too distant future, and will present new difficulties for current detection practices </p