Erythropoietin (EPO) is a hormone that multiplies the red blood cells that carry vital oxygen to tiring muscles. It is the drug of choice for endurance athletes unwilling to rely on talent and training alone in any race longer than about four minutes, reported Time magazine datelined May 22, 2000.

The IOC is rushing to get stringent, accurate test for EPO before Sydney 2000 Olympic Games in September 2000.