The amount of a extracellular superoxide dismutase [Cu-Zn] (human) when measured in cerebrospinal fluid. The trait is level of extracellular superoxide dismutase [Cu-Zn] (human) in cerebrospinal fluid (Ontology of Biological Attributes identifier OBA_2056886). Also known as: cerebrospinal fluid extracellular superoxide dismutase [Cu-Zn] (human) amount.