The World Anti-Doping Agency says it can now detect a new type of steroid that was previously undetectable using traditional testing methods.

The new drug, desoxymethyltestosterone or DMT, was found by WADA officials after an anonymous e-mail tipped them off to a substance seized by customs officials in Canada in June of last year.

'We believe it has been developed for the sole purpose of doping in sport,' said Olivier Rabin, science director, of the World Anti-Doping Agency. 'We now know THG was not a unique case of designer steroids.'

Thus far, agency officials have not found any evidence that the new substance has been used. They examined all urine samples saved over the last six months and none of them came back positive for DMT.

The distinguishing thing about the new steroid is its complexity. 'What this tells us is we have chemists with a very serious organic chemistry background that are helping the people who are distributing this substance to athletes,' said Christiane Ayotte, the director of Montreal's Olympic Lab to the New York Times. 'This is very dangerous because there is no purification.'

The World Anti-Doping Agency expects to develop further tests for DMT and other designer steroids. It's just another chapter in the cat-and-mouse game between cheating athletes and the law.