the method employs either homogenization , precipitation or dilution followed by direct injection of the samples and permits the chromatographic resolution of dopamine , norepinephrine , epinephrine , serotonin ( 5-ht ) , 3,4-dihydroxyphenylacetic acid ( dopac ) , 5-hydroxyindoleacetic acid ( 5-hiaa ) and homovanillic acid ( hva ) in brain ;
C0028351
norepinephrine
C0014563
epinephrine