All London 2012 medallists will be drug tested this year as part of the biggest anti-doping operation in the history of the Olympic Games, which will see half of all competitors tested.
150 scientists will take 6,000 samples between now and the end of the Paralympic Games.
More than 1,000 people will staff the anti-doping laboratory, with up to 400 samples tested every day for more than 240 prohibited substances.
Team GB’s Phillips Idowu, Beth Tweddle, David Weir, Graham Edmunds and Marlon Devonish are fronting a campaign highlighting the anti-doping programme.
Meanwhile, London 2012 is today preparing to welcome the first teams into the Olympic Village as it officially opens for business.
Each team will be greeted upon arrival with an official ceremony where their country’s national anthem will be played and their flag raised by members of the British Armed Forces.
The national anthems of more than 200 countries have been arranged by British composer, conductor and cellist Philip Sheppard and were recorded by the London Philharmonic Orchestra, using 36 musicians and 50 recording hours over six days.