The amount of a 5,6-dihydroxyindole-2-carboxylic acid oxidase (human) when measured in cerebrospinal fluid. The trait is level of 5,6-dihydroxyindole-2-carboxylic acid oxidase (human) in cerebrospinal fluid (OBA_2057259). Also known as: cerebrospinal fluid 5,6-dihydroxyindole-2-carboxylic acid oxidase (human) amount.