The BWF announced on 4 September 2010 that a BWF Doping Hearing conducted in Copenhagen on Monday 23 August has banned Zhou Mi for 2 years from participation in badminton, following an Adverse Analytical Finding. A sample taken from her in late June as part of the BWF's 'out-of-competition' testing programme. Zhou tested positive to clenbuterol, a Class 1 Anabolic Agent on the WADA Prohibited List of substances. On 27 October 2011, more than one year after she was handed a two-year ban for testing positive for clenbuterol, former badminton world No. 1 Zhou Mi reiterated her innocence. "At the time of the test, I was not competing or preparing to compete. There was not even the slightest reason or incentive for me to take any performance-enhancing substance," said Zhou. Regardless of the incident, Zhou, now 32, added it was time for her to retire from the sport. Clenbuterol can be consumed from eating contaminated food. Achievements Olympic Games Women's singles World Championships Women's singles Asian Games Women's singles Asian Championships Women's singles East Asian Games Women's singles World Junior Championships Mixed doubles Asian Junior Championships Girls' singles Girls' doubles BWF Superseries The BWF Superseries, which was launched on 14 December 2006 and implemented in 2007, is a series of elite badminton tournaments, sanctioned by the Badminton World Federation (BWF). BWF Superseries levels are Superseries and Superseries Premier. A season of Superseries consists of twelve tournaments around the world that have been introduced since 2011. Successful players are invited to the Superseries Finals, which are held at the end of each year. Women's singles BWF Superseries Finals tournament BWF Superseries tournament BWF Grand Prix The BWF Grand Prix had two levels, the BWF Grand Prix and Grand Prix Gold. It was a series of badminton tournaments sanctioned by the Badminton World Federation (BWF) which was held from 2007 to 2017. The World Badminton Grand Prix sanctioned by International Badminton Federation (IBF) from 1983 to 2006. Women's singles Women's doubles Mixed doubles BWF Grand Prix Gold tournament BWF & IBF Grand Prix tournament BWF International Challenge/Series Women's singles BWF International Challenge tournament BWF International Series tournament BWF Future Series tournament Record against selected opponents Record against year-end Finals finalists, World Championships semi-finalists, and Olympic quarter-finalists. References External links 1979 births Living people People from Nanning Badminton players from Guangxi Chinese female badminton players Badminton players at the 2004 Summer Olympics Olympic