The amount of a amine oxidase [copper-containing] 3 (human) when measured in cerebrospinal fluid. The trait is level of amine oxidase [copper-containing] 3 (human) in cerebrospinal fluid (OBA_2059041, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid amine oxidase [copper-containing] 3 (human) amount.