Influence of thyrotropin-releasing hormone on the postmenopausal female.

Daily blood samples were obtained from 5 postmenopausal patients for 21 days and analyzed for plasma follicle stimulating hormone (FSH), luteinizing hormone (LH), estrone, estradiol, progesterone, and serum T4. On days 8 through 14, oral thyrotropin-releasing hormone (TRH) was administered, 50 mg, 4 times a day. All patients showed asignificant T4 response. There was, however, no significant change in the plasma FSH, LH, estrone, estradiol, or progesterone. We conclude that oral administration ofTRH has no influence on the elevated circulating concentration of FSH and LH seen in the postmenopausal female.