She is suspended from competing until June 13, 2015.

A second teenager, 18-year-old hammer thrower Elif Akbas, also tested positive for stanozolol at the student event.

An IAAF list of sanctioned athletes shows that stanozolol and oral turinabol were both found in samples taken at Bursa from Kubra Danis, a 22-year-old shot putter, and Gokce Celenk, a 25-year-old discus thrower.

Javelin throwers Sarik Bilgin, who is 25, and 21-year-old Gulsum Ozdemir Gunes also tested positive for stanozolol.

The IAAF said the other cases involve two field athletes and one runner testing positive for stanozolol, methandienone and oxandrolone, respectively.

Ali Ekber Kayas (pictued top), a 26-year-old 400 metres runner who competed at the 2012 World Indoor Championships in Istanbul, gave a sample with oxandrolone at a national competition in May 2012.

He is suspended until July 2, 2014.

Shot putter Nilgun Ozturk tested positive for methandienone at the same competition, and received the same ban as Kayas.

The IAAF said 21-year-old javelin thrower Berkay Tolun tested positive for stanozolol during training in May.

His ban expires on June 6, 2015.

IAAF President Lamine Diack, (left) pictured here with Turkey's Prime Minister Recep Tayyip Erdoğan (centre) at last year's World Indoor Championships in Istanbul, has warned the Turks that they need to "clean their house" and eradicate its doping problem

Earlier this week, IAAF President Diack had warned that Turkey should step up its efforts against doping.

"They cannot bid for the Olympics if they cannot control their athletes," Diack, who is also a member of the International Olympic Committee (IOC), exclusively told insidethegames.

"I'm not saying we get rid of the Federation but they need to clean their house."

More than 30 Turkish athletes have failed drugs tests in the past year, including last year's Olympic 1500m champion Aslı Çakır Alptekin and two-time defending European champion 100n hurdler Nevin Yanıt, and Diack has told senior Government officials that the situation is seriously jeopardising their bid.

"It's not the Olympic Committee or the [athletics] Federation who must solve the problem - it's the Government," said Diack.

"I have already talked to them [the Government].

"They asked me, as an IOC member, what my advice would be.

"I said, 'Look, there is an important issue - it is that you have to finish with doping.'

"I told them that if they are going to win the bid I think you need to take care of this big issue.

"They are bidding for the 2020 Olympics but every few days we have three or four athletes caught for doping."

Contact the writer of this story at [email protected]


Related stories
July 2013: Exclusive - Turkey needs to "clean their house" if Istanbul 2020 is to win bid, IAAF President warns
July 2013: Footballers back Istanbul as bid tries to contain doping fallout
May 2013: Olympic 1500m champion faces being stripped of gold medal after IAAF launch investigation
April 2013: Turkey leaves Olympic gold medallist out of Mediterranean Games over doping suspicions
March 2013: Turkish Olympic 1500m champion facing life ban after positive test