in this study , af pg levels , measured by an enzymatic method , were correlated with af concentrations of catecholamines ( cat ) and the deaminated metabolites of dopamine ( 3,4-dihydroxyphenylacetic acid ; dopac ) and norepinephrine ( 3,4-dihydroxyphenylglycol ; dopeg ) , all of which were determined by radioenzymatic assay .
C0007412
catecholamines
C0028351
norepinephrine