The amount of a NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial (human) when measured in cerebrospinal fluid. The trait is level of NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial (human) in cerebrospinal fluid (Ontology of Biological Attributes entry OBA_2056475). Also known as: cerebrospinal fluid NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial (human) amount.