The amount of a phosphorylase b kinase regulatory subunit alpha, skeletal muscle isoform (human) when measured in cerebrospinal fluid. The trait is OBA_2057882 (level of phosphorylase b kinase regulatory subunit alpha, skeletal muscle isoform (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid phosphorylase b kinase regulatory subunit alpha, skeletal muscle isoform (human) amount.