It is reported that one in ten drugs samples, taken in Athens, had been tested for human growth hormone (HGH).
The idea according to Dick Pound, head of the World Anti-Doping Agency (WADA), was to surprise drug cheats by re-testing samples kept over from the Olympics for new designer drugs.
Out of the 300 tests for HGH, none have rated positive so far.
However, there were 24 other doping violations announced during this year's Olympics.
In another move to stop cheating, the samples taken at the Olympics are to be kept for eight years for retroactive testing.
However, Dick Pound is "pissed off" with government's lack of enthusiasm for funding the work of WADA. They are still awaiting the US contribution, which accounts for 10% of the 2005 budget.