( CNN ) -- Women 's Olympic shot put champion Nadzeya Ostapchuk has been stripped of her gold medal after testing positive for a banned substance . The Belorussian won her country 's only track & field gold , but the title will now go to New Zealand 's Valerie Adams after two of Ostapchuk 's urine samples contained traces of metenolone . `` The International Olympic Committee ( IOC ) has disqualified , withdrawn the medal from , and excluded Belarus 's Nadzeya Ostapchuk from the Games of the XXX Olympiad in London , '' read an IOC statement . `` The athlete was first requested to provide a urine sample for a doping control on August 5 . She competed the next day in the women 's shot put event , where she placed first , and was asked to provide a sample straight after her competition . `` Both samples indicated the presence of metenolone , which is classified as anabolic agent under the 2012 prohibited list . '' Russia 's Evgeniia Kolodko has been promoted to the silver medal position , while China 's Lijiao Gong has been awarded bronze . British discus thrower Brett Morse was forced to apologize last week after making offensive comments about Ostapchuk and suggesting the 31-year-old had been doping on Twitter . Alex Schwazer , 2008 gold medalist and one of the favorites for the men 's walking events in London , admitted to doping last week after recording a positive test . Ostapchuk 's positive test came just hours after London bid farewell to the Games with a closing ceremony which featured iconic British acts such as the Spice Girls and The Who .
Nadzeya Ostapchuk stripped of women 's shot put gold after failing a drug test . Score: 6 New Zealand 's Valerie Adams has been awarded the gold medal . Russia 's promoted to silver medal position , with China 's Ligiao Gong now third .