Landis was fired from the Phonak team on 5 August 2006. The doping test after stage 17 of the 2006 Tour de France showed he had a very high testosterone/epitestosterone "ratio". The rules say that for every one unit of one chemical he should have four unites of the other (a 4 to one (4:1) ratio). Landis's test showed a ratio of 11:1.