no, that's not that. the source was shaky- read it- it is clearly third-hand information from word-of-mouth. second, and more important, is the carbon isotope ratio test. this is not 100%. many things can cause variations in isotope ratios, including the cortizone shots landis receives. they are simply checking his urine for different forms of carbon, which does not clearly say the testosterone is exogenous. you could eat a steroid-fed chicken and pick up detectable isotopes. any glycogen consumed from farmed meat can do this. the system is broken, and this test is far from perfect.