The amount of a ubiquitin-associated and SH3 domain-containing protein A (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2058207 (level of ubiquitin-associated and SH3 domain-containing protein A (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid ubiquitin-associated and SH3 domain-containing protein A (human) amount.