ne; E = Epitestosterone, T = Testosterone, 5aAdiol = 5α-androstane-3α,17β-diol, 5bAdiol = 5β-androstane-3α,17β-diol Administration of testosterone The most obvious influence of a testosterone administration [...] the glucuronidated testosterone metabolites androsterone, etiocholanolone, 5α-androstane-3α,17β-diol and 5β-androstane-3α,17β-diol and the glucuronides of testosterone and epitestosterone, which originates [...] originates from the synthesis of testosterone. Among these parameters the best elucidated and investigated item is the ratio of testosterone and epitestosterone (T/E) which was introduced in doping controls by