Dear Editor
The increase in plasma prolactin at 15 min following administration of 12.5
µg TRH i. v. (∆prol) was introduced in Pharmacopsychiatry as
an inverse estimate of tuberoinfundibular dopamine (TIDA) activity [1]. We used the unpublished data set in 20
participants with nonaffective psychosis from our 1991 study utilizing ∆prol
[2] and here report new results with its
association with memory.
