Prolactin after gonadotropin-induced pregnancy.

Prolactin levels during a gonadotropin-induced pregnancy have not been previously reported. A patient with Forbes-Albright syndrome is described. She received radiation therapy, with cessation of her galactorrhea, but she remained amenorrheic. Three years after irradiation, a pregnancy was successful induced with human menopausal gonadotropins and human chorionic gonadotropin. Prolactin levels determined prior to gonadotropin therapy, during an insulin hypoglycemia stimulation test, serially during pregnancy, and postpartum during lactation are presented. These levels are compared with the previously reported levels for basal prolactin, response to insulin hypoglycemia, pregnancy, and lactation. Possible etiologies for the abnormal values and responses obtained from investigation of this patient are discussed.