on of organically bound cobalt is permitted. To date, doping control urine samples are commonly analyzed for total cobalt concentrations by means of inductively coupled plasma mass spectrometry (ICP‐MS)

isomers. Using this method, urine samples from a controlled clomiphene administration study were analyzed, in which male study participants received therapeutic doses of clomiphene for 30 days and collected

via alterations in the urinary steroid profile [1]. The main parameters of the steroid profile as analyzed in doping control laboratories are the concentrations and ratios of the glucuronidated testosterone [...] AAS dihydrotestosterone [5]. To globalize this strategy, i.e. be able to compare steroid profiles analyzed at different locations, WADA and the accredited doping control laboratories harmonized the employed