The amount of a splicing factor U2AF 65 kDa subunit (human) when measured in cerebrospinal fluid. The trait is level of splicing factor U2AF 65 kDa subunit (human) in cerebrospinal fluid (Ontology of Biological Attributes id OBA_2057505). Also known as: cerebrospinal fluid splicing factor U2AF 65 kDa subunit (human) amount.