The substance is a known to be a diuretic banned for its ability to hide the use of other performance-enhancing drugs.
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Chen has requested a hearing from the International Olympic Committee, and has asked for her B sample to be tested.
The Chinese swimming body said it has “taken this matter seriously and demanded full cooperation from Chen in the investigation”.
Sun was revealed two years ago to have secretly served a three-month suspension for using a banned stimulant.
“The athlete accepted a provisional suspension on a voluntary basis; as a outcome, the athlete is provisionally suspended from competing at the Olympic Games Rio 2016”, read a CAS statement.
Chen Xinyi, China’s top butterfly swimmer, is out of the Rio 2016 Olympic Games after the Court of Arbitration for Sport, sitting here in Brazil, handed the 18-year-old a temporary suspension, with a final decision due before the end of the Games.
Bulgarian and 3000m steeplechase, Silvia Danekova was also banned for the remained of the games after testing positive for erythropoietin (EPO)-a hormone that is believed to increase the endurance of athletes.
“This reported test should be generated by the organizer”.
“I am not guilty, I have done nothing wrong”. “[Results] of three of the samples were negative”.
Adrian failed a test in Poland before the Games, Michal Rynkowski, director of Poland’s Commission Against Doping in Sport, told reporters in Warsaw.
Media reports named the official as sprint coach John Anzrah, saying he had attempted to impersonate an athlete during a doping test.
Chen, the 2014 Asian Games champion in the 100m fly and 50m freestyle, had been slated to appear in the last of 12 heats of the 50m free on Friday, but did not line up. “We found out that my fourth test was positive”, she said.
“It wasn’t quite ideal but there are no regrets after trying one’s hardest”, Chen wrote on her official microblog on Monday in her only post this year.
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Rugby has also made its return and Fiji’s sevens team hammered Britain 43-7, the South Pacific nation’s first ever gold medal sparking wild celebrations at home.
