[Testosterone serum concentrations after subcapsular orchiectomy (author's transl)].

Twelve patients with prostatic carcinoma in stage C or D underwent subcapsular orchiectomy. Testosterone serum concentrations were measured by radioimmunoassay before and up to eight months following orchiectomy. After an initial decrease, testosterone concentrations remained between 0.42 ng and 0.67 ng/ml serum throughout the observation period. Stimulation with 5000 IU hCG/day for three days did not cause an increase in testosterone concentrations.