The amount of a cAMP-dependent protein kinase type II-alpha regulatory subunit (human) when measured in cerebrospinal fluid. The trait is level of cAMP-dependent protein kinase type II-alpha regulatory subunit (human) in cerebrospinal fluid (OBA_2057131, an Ontology of Biological Attributes id). Also known as: cerebrospinal fluid cAMP-dependent protein kinase type II-alpha regulatory subunit (human) amount.