David Howman, WADA's director general, said that an "enhanced focus" on pre-competition testing was a key element in the "better practice" model utilised for Glasgow 2014.

He went on: "This emphasis on testing during higher-risk doping periods was successfully implemented and as a result WADA encourages all major event organisations to expand their own out-of-competition testing programmes in collaboration with International Federations (IFs) and National Anti-Doping Organisations (NADOs) prior to the event; and further throughout the period the Athletes' Village opens until the end of the event."

Howman also said WADA was pleased with the "success of the collaborative approach" taken by the different anti-doping organisations during Glasgow 2014.

He added: "We were impressed by the constructive relationship that developed between the Commonwealth Games Federation (CGF), the Glasgow Organising Committee and UK Anti-Doping (UKAD)", the body contracted to carry out testing at the event.

"This type of partnership," he said "should be a template for future major events".

Nigerian weightlifter Chika Amalaha was one of only two athletes to test positive at Glasgow 2014 following an anti-doping programme praised by the World Anti-Doping Agency
©Getty Images

David Grevemberg, CGF chief executive, who held the same role at Glasgow 2014, said that the body was "delighted to have contributed by promoting the values of fair play and advancing the delivery of doping control regimes at major sporting events".

WADA said, however, that it would publish no report on the programme, "due to the nature of the IO mission conducted in Glasgow".

The agency's "better practice" model was piloted in 2013 at the World Games in Cali, Colombia; Glasgow 2014 marked the biggest multi-sport event yet at which it has been conducted.

Chika Amalaha, a Nigerian weightlifter, and Amantle Montsho, the former world 400 metres champion from Botswana, were both disqualified after the CGF determined they had committed anti-doping rule violations.