by means of a modified radioenzymatic assay , simultaneous determinations of the parent catecholamines , epinephrine ( e ) , norepinephrine ( ne ) , and dopamine ( da ) , and their deaminated metabolites , 3,4-dihydroxyphenylacetic acid ( dopac ) and 3,4-dihydroxyphenylglycol ( dopeg ) , were made in amniotic fluid obtained during the second ( n = 44 ) and third ( n = 20 ) trimesters of normal pregnancies .
C0014563
epinephrine
C0028351
norepinephrine