Oksana Khvostenko () (born 27 November 1977 in Chernihiv) is a Ukrainian biathlete. She is a multiple medalist at the World Championships. In 2008 together with Andriy Deryzemlya she won World Team Challenge. Anti-doping rule violation Khvostenko tested positive for ephedrine at a post event doping control at the Biathlon World Championships 2011 where the Ukrainian team had finished second in the Women's Relay. The team was later disqualified because of the anti-doping rule violation and Khyostenko received a one-year ban from sport, commencing on 13 March 2011. Personal life Since 2001, she is married to Ukrainian biathlete Vyacheslav Derkach. Career World Championships 2003 - Silver medal on the relay 2008 - Bronze medal, Sprint 2008 - Bronze medal, Individual 2008 - Silver medal on the relay References 1977 births Living people Ukrainian female biathletes Olympic biathletes of Ukraine Biathletes at the 2002 Winter Olympics Biathletes at the 2006 Winter Olympics Biathletes at the 2010 Winter Olympics Biathlon World Championships medalists Universiade medalists in biathlon Sportspeople from Chernihiv Ukrainian sportspeople in doping cases Doping cases in biathlon Universiade bronze medalists for Ukraine Competitors at the 1999 Winter Universiade Competitors at the 2003 Winter Universiade Competitors at the 2005 Winter Universiade