In April 2013 the International Skating Union (ISU) has reported an anti-doping rule violation against the South Korean Athlete Joo Hyung-Joon after he failed to be tested before the selection was posted. The Athlete was recalled from the hotel and returned to the rink where he provide a sample with a negative test result.
The ISU Disciplinary Commission finds that the Athlete made the mistake to leave the ice rink before checking whether he had been selected for anti-doping testing. His carelessness is regrettable but can’t be considered as a gross offence.
Therefore the ISU Disciplinary Commission decides on 27 December 2013 to impose a reprimand and a warning with disqualification of his results obtained at the Championships on 21-24 March 2013.