Plasma prolactin levels after TRH and chlorpromazine in normal subjects and patients with impaired pituitary function.

Basal plasma prolactin levels and values after stimulation with TRH and chlorpromazine respectively were measured. TRH tests were performed in 50 healthy subjects (25 women and 25 men). The basal prolactin levels and the maximum increment were found to be as follows in women 22.02 ng/ml