On September 11, 2015, the swimmer Michal Zawadka (POL) was tested positive to the prohibited substances Clenbuterol (Class S.1.2 Other Anabolic Agents) and Methylhexaneamine (Class S.6 Stimulants) following a doping control test conducted by the Australian Sports Anti-Doping Authority (ASADA) on the occasion of the 2015 NSW State Open Short Course Championships in Sydney (AUS).
The Swimming Australia Limited imposed a sanction of 4 years’ ineligibility on the athlete starting on November 11, 2015, the day of her provisional suspension.