To give an athlete the blood taken from the athlete himself/herself or someone else in order to increase the athletic performance is called blood doping. The aim of this type of doping is to increase the maximal oxygen consumption in the endurance sports. It is thought that blood doping isuseful for the performance in some sports, which ensure need of energy by means of aerobic way (cross-country skiing, cycling, rowing long distance running and other endurance sports). Keywords :