The amount of a interleukin-22 receptor subunit alpha-1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2059837 (level of interleukin-22 receptor subunit alpha-1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid interleukin-22 receptor subunit alpha-1 (human) amount.