Plasma homovanillic acid (HVA), but not plasma 3-methoxy-4-
hydroxyphenylglycol (MHPG), was substantially increased in 4 patients
undergoing hemodialysis, 3 patients with chronic renal failure, and 3
patients receiving carbidopa/levodopa for Parkinson's disease. These
conditions should be considered in psychiatric research involving plasma
HVA.
Abstract Teaser