World Rugby has announced a clean bill of results from their extensive anti-doping programme during the 2015 World Cup.
There were 468 samples undertaken across all 20 participating teams, with 200 in-competition samples and 268 out-of-competition samples collected.
Run in partnership with UK Anti-Doping (UKAD), who were the official sample collection organisation for the World Cup, the programme has recorded no adverse findings to date.
World Rugby Chairman Bernard Lapasset aired his satisfaction at the success of the programme but warned against complacency in the ongoing battle against doping in the sport.
"Doping is a major threat to the integrity of sport and World Rugby is committed to a prevention programme of targeted testing and global education to ensure that players at all levels understand the performance and health importance of maintaining a level playing field for all,” he said.
"We must continue to drive the education agenda and protect clean players."
"Our Rugby World Cup 2015 programme was based on intelligence-led testing and reflects our commitment to ensure that we are ahead of the curve in this area. While there were no adverse findings before, or during, Rugby World Cup 2015 that doesn't mean we can become complacent as to the risks.
"That is why we have increased our budget in this important area and committed to storing samples for potential further analysis.
"As our showcase tournament, Rugby World Cup 2015 provided a global platform to reach, engage and educate the global rugby family at all levels as well as wider society. Collectively, we must continue to drive the education agenda and protect clean players.
"I would like to thank everyone who took part and supported this important programme.”
The testing programme included a mix of urine (317 samples collected) and blood (151). All samples were analysed by the Drug Control Centre at the World Anti-Doping Agency (WADA)-accredited laboratory at King's College, London. Samples will be stored for future re-analysis in line with previous events.
England 2015 was the first Rugby World Cup to feature the Athlete Biological Passport (ABP) programme following its introduction by World Rugby in 2013.
Rugby increased its targeted testing and education budget by nearly 30% in 2015, with the ABP at the heart of the approach.
The tournament testing programme was an extension of World Rugby's existing anti-doping programme, which has seen more than 1,300 blood and urine tests undertaken across the teams in and out of competition between January and September.