China urges ITA to intensify testing of US athletes

China's anti-doping agency on Thursday urged the International Testing Agency to intensify testing of US track and field athletes after American sprinter Erriyon Knighton tested positive for the banned substance trenbolone.

CHINADA accused the US Anti-Doping Agency earlier this week of double standards, saying its US counterpart had been "trying its best" to clear US athletes while accusing CHINADA and the World Anti-Doping Agency of cover-ups.

Knighton tested positive for trenbolone this year but was not suspended for the Paris Games after an arbitrator found the result was likely caused by contaminated meat. The USADA chief has been outspoken about 23 Chinese swimmers who tested positive before the 2021 Tokyo Olympics but were allowed to compete.

CHINADA said on Thursday that trenbolone was a common contaminant in the United States, and athletes everywhere including US athletes should pay close attention to meat contamination. Citing a recent WADA statement, it said that 31 percent of US athletes were inadequately tested in the 12 months before the Tokyo Games.

"In light of the above, we strongly call on the International Testing Agency to intensify testing on the US track and field athletes," CHINADA said in a statement on its WeChat account.

"We also strongly recommend that the Athletics Integrity Unit strengthen anti-doping supervision of the US track and field, prevent the doping risks, and strictly investigate relevant cases, in an endeavor to truly protect the legitimate rights and interests of the clean athletes around the world, and to rebuild the trust of global athletes in fair play."