Why even test at all?

Or have two races. The Dopers TdF (TdF-D) and the regular TdF.

Hell, you'd find no shortage of sponsors for the Dopers' TdF. Every pharmaceutical company in the world would be in on that biz.

"I'd just like to thank our Sponsor, GlaxoSmithKline, for all their support. Their performance supplements truly helped me excel past the competition."

All kidding aside, if you stop making an issue of it, it'll stop being an issue.