The amount of a low-density lipoprotein receptor class A domain-containing protein 4 (human) when measured in cerebrospinal fluid. The trait is level of low-density lipoprotein receptor class A domain-containing protein 4 (human) in cerebrospinal fluid (OBA_2056066, an Ontology of Biological Attributes entry). Also known as: cerebrospinal fluid low-density lipoprotein receptor class A domain-containing protein 4 (human) amount.