Mo Farah says he's "never taken performance enhancing drugs" in his life, and he never will.
It was revealed the double Olympic champion missed two doping tests in the run up to his London 2012 success.
He's also having to deal with his coach and training partner being at the centre of doping allegations.
Regards the missed test Farah says:
"I've fully explained the only two tests in my career that I have ever missed, which the authorities understood, and there was never any suggestion that these were anything more than simple mistakes."
The runner went on to say that the pressure surrounding him to answer questions about the tests has left him feeling angry, frustrated and upset.
"The last two weeks have been the toughest of my life - with rumours and speculation about me that are completely false - and the impact this has had on my family and friends has left me angry, frustrated and upset," Farah said in a statement.
Farah says the he met with his coach, Alberto Salazar, who ensured him that all allegations against him are false.
"As I made clear, I went to Portland to speak to Alberto Salazar and demand answers. He reassured me that the claims are false and that he will soon be providing evidence to make that clear. Until then I will not be commenting further on the allegations."
Farah concluded his statement by thanking those supporting him and outlined his desire to shift his focus back onto running.
"I would like to take this opportunity to thank my fans, family, friends and teammates for all the great support they have provided over the last few days and hope that I will now be allowed to focus on my training and winning medals for my country."
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