The authors measured urinary monoamines and their metabolite outputs in
12 unmedicated depressed patients. Output of 3-methoxy-4-hydroxy-
phenylglycol and vanillylmandelic acid proved to be relatively stable from
one sample to another. An average of at least two measures provided data
with a meaningful reliability for normetanephrine, serotonin, and
homovanillic acid output. Output of dopamine, norepinephrine,
5-hydroxyindoleacetic acid, and phenylethylamine was highly variable over
time.Abstract Teaser