However, CGF chief executive Mike Hooper had a stark warning for any would-be cheats.

BBC: Organisers talk tough on drugs

Preparations for Glasgow 2014 are the best for any Commonwealth Games in the past 20 years, according to the Commonwealth Games Federation (CGF).

BBC: Glasgow 2014 Games preparations 'best in 20 years'

"Once the result of the A sample is known it is a statement of fact until proved otherwise, " CGF chairman Mike Fennell said.

BBC: Organisers talk tough on drugs

The CGF co-ordination commission held its latest official inspection on Thursday.

BBC: Glasgow 2014 Games preparations 'best in 20 years'