The World Boxing Council has been notified by the D. C. Boxing and Wrestling Commission about an adverse finding for the  banned substance “Ostarine" in the post fight anti doping test from Lucian Bute . Bute challenged  Badou Jack for the WBC super middleweight championship, fight which took place in Washington, D. C. on April 30, 2016 , which resulted in a draw .

The D. C. Boxing and Wrestling Commission will follow its rules and regulations regarding antidoping and will be in consultation with the WBC and its Clean Boxing Program. Further news will be known in the coming days.

Ostarine, which is a selective androgen receptor modulator (SARM), may be used by athletes to assist in training and increase physical stamina and fitness, potentially producing effects similar to anabolic steroids. For this reason, SARMs were banned by the World Anti-Doping Agency in January 2008 despite no drugs from this class yet being in clinical use, and blood tests for all known SARMs have been developed.

In June 2013, professional cyclist Nikita Novikov was provisionally suspended after a possible breach of anti-doping rules, due to a positive A-sample result for ostarine.

UFC Fighter Tim Means was pulled from a fight in February of 2016 after testing positive for Ostarine in a pre-fight drug screening administered by USADA.

In June 2015 Azerbaijan's Chaltu Beji has tested positive for doping at the 2015 European Games in Baku. The 18-year-old Ethiopian-born Beji tested positive for the banned substance ostarine in a urine sample with a B sample confirming the result. She won the 3,000 meter steeplechase event despite falling at the last water jump, she was disqualified because of the positive tests.