The IAAF has defended its drug-testing procedure at the World Athletics Championships by revealing that it was the largest implemented in any sport for two years.
The number of athletes being tested at the Worlds had come in for criticism, but the sport's governing body has hit back by revealing that 1,400 tests were conducted, the highest number since the World Championships in Moscow in 2013.
The IAAF said: "The doping control programme implemented by the IAAF in Beijing was the largest implemented in a single sporting event by any sport since the IAAF World Championships in Moscow two years ago.
"Thousands of samples were collected out of competition in the lead-up to the event, and the IAAF then implemented an intelligence-led programme in Beijing.
"Should any of the remaining samples be reported as positive, the IAAF will make a public announcement when the rules allow."
It has also been revealed that each of the 1,405 tests will be stored for future analysis.