He was caught in an out-of-competition drug test last month.
Previous sensors weighed up to 13 pounds.
The events are taking place two months before the world championships.
The IAAF hopes this new program will further improve drug screening. Beginning this month, the IAAF is taking a new step to combat the use
New drug aimed at helping patients with kidney problems could be the latest performance enhancer in athletics. Anti-doping authorities are
International Olympic Committee took fifteen months to make final decision. The 2008 Olympic 1500m gold medalist, Rashid Ramzi of Bahrain,