catecholamines , norepinephrine , epinephrine and dopamine were measured by electrochemical detection while the peptides , vasopressin , oxytocin , luteinizing hormone-releasing hormone ( lhrh ) , the enkephalins and somatostatin ( srif ) were measured by radioimmunoassay .
C0007412
catecholamines
C0028351
norepinephrine