The amount of a adenylate kinase isoenzyme 5 (human) when measured in cerebrospinal fluid. The trait is level of adenylate kinase isoenzyme 5 (human) in cerebrospinal fluid (OBA_2081895, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid adenylate kinase isoenzyme 5 (human) amount.