From the Chicago Tribune: Another test, which analyzes carbon isotopes, provides much more definitive evidence that an athlete has used external testosterone, according to Don Catlin, director of the Olympic drug testing laboratory at UCLA.
The French newspaper L'Equipe reported in Friday's editions that the Olympic anti-doping lab in Paris that analyzed Landis' sample also performed the carbon isotope test and that it clearly showed the presence of external testosterone.
Now I understand the presumption of innocence, and I firmly believe none of this should have been public until confirmed. Nonetheless, I don't things are looking good for Landis right now.