The amount of a ubiquitin carboxyl-terminal hydrolase 30 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2059466 (level of ubiquitin carboxyl-terminal hydrolase 30 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid ubiquitin carboxyl-terminal hydrolase 30 (human) amount.