On July 27 , 2006 the Phonak Cycling Team said Floyd Landis had a urine test come back positive , having an unusually high ratio of the hormone testosterone to the hormone epitestosterone ( T\/E ratio ) after Stage 17 . 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 epic performance in stage 17 of the 2006 Tour de France .