Apparently, the night before he was tested - he got hammered - which may explain the high levels of testosterone?
The night before Stage 17, Mr. Landis said, while gathered with friends and teammates, he prepared for the strenuous mountain stage by drinking two beers and at least four shots of whiskey.
The revelation that Mr. Landis was drinking the night before the test could be significant. According to several studies, alcohol consumption can increase the ratio between testosterone and epitestosterone, which occur naturally in the body. Mr. Landis failed the test because it showed an elevated ratio between the two.