A total of 15 athletes have been implicated as part of the second wave of retests from the Olympics in the Chinese capital, with eight finishing as medallists.
Cao Lei, who won the 75 kilograms category, 69kg champion Liu Chunhong and 48kg gold medallist Chen Xiexia all tested positive for GHRP-2.
Liu also failed for stimulant sibutramine.
Belarus’ Andrei Rybakov, who won silver in Beijing and is the current world record holder in the 85kg category, is also on the list after he tested positive for anabolic steroids Dehydrochlormethyltestosterone and Stanozolol.
