The British Journal of Psychiatry 139: 404-407 (1981)
© 1981 The Royal College of Psychiatrists
Neuroendocrine tests during treatment with neuroleptic drugs. II. The TRH test
LE Braddock and IM Blake
Anterior pituitary response to TRH 200 micrograms i.v. was studied in ten
chronic schizophrenic patients during long-term neuroleptic treatment. Nine
patients had normal prolactin (PRL) response as compared with controls but
in one the response was blunted; one patient had an exaggerated response.
Prolactin increment was higher following TRH than haloperidol challenge. No
growth hormone (GH) response to TRH was found and TSH responses were
comparable to controls.