CAS says it approved an agreement between Cakir Alptekin and athletics governing body IAAF.
It said that all competitive results obtained by her since July 29, 2010, had been disqualified including the Olympic Games 1,500 metres final in London.
The Consent Arbitral Award ratifies a settlement agreement signed between the parties relating to abnormal values found in blood samples collected from the athlete between July 2010 and October 2012.
The latest ban comes as Beijing prepares to host the World Championships from this Saturday.
She won gold in London after lowering her personal best time by nearly nine seconds throughout the season.
She is one of several Russian medallists banned for doping since London 2012, although so far only a silver won by the discus thrower Darya Pishchalnikova has been reallocated.
The 29-year-old Turkish athlete struck the deal as she had risked a life ban having been suspended for doping for two years in 2004.
Alptekin had been originally cleared of doping by the Turkish Athletics Federation (TAF) back in December 2013 after abnormalities with her blood levels were found in her biological passport, resulting in her missing the World Championships in Moscow in August the same year. “We… are basing the decision exclusively on the rules of the IAAF and on nothing else”. “Sports community and athletes should learn the lesson that any institution or federation will not be showing tolerance towards doping”, Cintimar said. Tomashova has been withdrawn from the Russian national team that is competing at the IAAF World Championships starting this weekend, according to ARD TV.
“We haven’t got any IAAF official letters or inquiries on this subject”, Zelichenok said.