The amount of a beta-1,4-galactosyltransferase 5 (human) when measured in cerebrospinal fluid. The trait is level of beta-1,4-galactosyltransferase 5 (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2056133). Also known as: cerebrospinal fluid beta-1,4-galactosyltransferase 5 (human) amount.