On July 27, 2006, the Phonak Cycling Team announced a urine sample submitted by Floyd Landis tested positive for an unusually high ratio of the hormone testosterone to the hormone epitestosterone (T/E ratio) after his performance in stage 17 of the 2006 Tour de France. Landis denied doping and placed faith in a test using his backup sample. Phonak stated that he would be dismissed should the backup sample also test positive. It did, and Landis was suspended from professional cycling and dismissed from his team. Landis's personal physician later disclosed that the test had found a T/E ratio of 11:1 in Landis, far above the maximum allowable ratio of 4:1.The T/E ratio allowable limit is based on new science, and that there has been controversy about whether the WADA limit of 4:1 is scientifically acceptable, in other words, that this limit is too low. The Landis ratio of 11:1 would not have disqualified him a country such as Australia.
