[Gonadotropin induced steriodogenesis in prepubertal boys (author's transl)]. / Gonadotropin-induzierte Steriodproduktion bei praepuberalen Knaben

We examined the capacity of reaction in the endocrine tissue of testes in prepubertal boys. 18 boys were endocrinologically healthy, six suffered from cryptorchidism on one or both sides. After a single dose of HCG (5000 IU/m) we found an increase of pregnantriol excretion in the 24 h urine in all subjects studied except in the case of surgically proved anorchia. In all except one boy we found a sharp increase in testosterone after HCG administration.