I think the 1/2 life of testosterone is very limited and would be out of his system after that one stage.
FYI...Landis' testosterone level was NOT abnormally high...his epitestosterone level was abnormally low...thus causing him to have a T/E ratio that was out of whack. People get the impression that Landis' 11:1 ratio means he had 11 times the normal amount of testosterone in his system. Nothing could be further from the truth. His testosterone levels were in the normal range. The normal testosterone level is also solid evidence that he did NOT use supplemental testosterone in Stage 17.