The amount of a prolyl 4-hydroxylase subunit alpha-2 (human) when measured in cerebrospinal fluid. The trait is level of prolyl 4-hydroxylase subunit alpha-2 (human) in cerebrospinal fluid (OBA_2056104, an Ontology of Biological Attributes identifier). Also known as: cerebrospinal fluid prolyl 4-hydroxylase subunit alpha-2 (human) amount.