17ß-diol, 19-nor-4-androstene-3,17-dione, 19-nortestosterone, 4-androstene-3ß,17ß-diol, 5-androstene-3ß,17ß-diol, 4-androstene-3,17-dione, DHEA and testosterone. Up to now 18 different "non-hormonal" n [...] guarana, OKG, and BCAA. Excretion studies with the supplements, contaminated with prohormones of 19-nortestosterone, led in most cases to positive results for norandrosterone (norandrosterone above cut off limit)