The doping methods that are banned are: Blooding Doping This is where an athlete may inject blood into their system before an event to increase the red blood cells. This would increase the oxygen carrying capacity of the blood, which would help reduce fatigue. Administering artificial oxygen carriers or plasma expanders Pharmacological, chemical and physical manipulation This is an attempt to alter the integrity of a urine sample in ways such as using diuretics to dilute the urine or catheterisation.