The amount of a hyaluronan and proteoglycan link protein 4 (human) when measured in cerebrospinal fluid. The trait is level of hyaluronan and proteoglycan link protein 4 (human) in cerebrospinal fluid (OBA_2059578, an Ontology of Biological Attributes identifier). Also known as: cerebrospinal fluid hyaluronan and proteoglycan link protein 4 (human) amount.