Rogge wants to thrash out the cutbacks problem in June

Wada cut the number of tests from 5,000 in 2003 to 2,400 in 2004.

"We are very concerned about the reductions," said Denis Oswald, who heads ASOIF, the body representing summer Olympic sports federations.

Olympic chief Jacques Rogge wants to meet Oswald and Wada boss Dick Pound in June to discuss the issue.

"Out-of-competition testing is the cornerstone of the fight against drugs in sport," said International Olympic Committee president Rogge.

Wada say it has had to cut back on out-of-competition testing to concentrate on other priorites such as education and scientific research.

But Rogge said that Wada's programme was vital for smaller sports federations, who could not afford to carry out such testing themselves.

"One of the main advantages of Wada was that we could expand the number of out-of-competition tests through their funding," he said.