The "B" sample of Tour de France winner Floyd Landis has come back positive for elevated levels of testosterone. The testosterone found was a synthetic variety not supposedly produced by the human body. This would undermine Landis' assertion that the elevated levels were naturally produced. Landis seems rather dead in the water on this one. However, there are a few questions that come to my mind and, before you conclude anything, I'm not a Floyd Landis fan (never even heard of him before this year's Tour) nor am I an American apologist or conspiracy theory freak. I'd like to know what the significance is of the fact that Landis was tested eight other times during the Tour and all these tests came back negative. That would seem to mean that he certainly wasn't injecting (?) synthetic testosterone earlier during the Tour. I'd also like to know if the injection of synthetic testosterone a day or two before a race will produce any positive effect for the rider, or does the testosterone need to build up in your metabolism for a period of time before it can help you any. These would appear to be the crucial questions in this story and, to date, I haven't been able to find an answer.