plasma concentrations of cortisol , noradrenaline ( na ) , adrenaline ( a ) , 3,4-dihydroxyphenylglycol ( dhpg ) and dihydroxyphenylacetic acid ( dopac ) were assayed from venous blood samples just before premedication and just before the spinal block .
C0028351
noradrenaline
C0014563
adrenaline