no significant difference in urinary l-dopa , dopamine , and 3-o-methyldopamine excretion rates was seen between normal subjects ( l-dopa 1.3 +/- 0.3 , dopamine 147 +/- 38 , and 3-o-methyldopamine 31.4 +/- 13.6 microgram/24 h ) , hospitalized patients without melanoma , and amelanotic melanoma patients .
C0013030
dopamine
C0011498
methyldopamine