[Steroid metabolism in primates. 15. Excretion of C19 and C21 steroids in the urine of baboons after prolonged treatment with a mestranol and chlormadinone-acetate combination]

The urinary excretion of C21- and C19-steroids was investigated in female babons (Papio hamadryas) treated with the ovulation inhibitor Ovosiston (mestranol + chlormadinone-acetate) in comparison with an untreated control Group Urinary C21-steroid excretion was not significantly altered by Ovosiston. 17-Ketosteroids were decreased predominantly 11-oxygenated compounds.(Authors Modified)