The amount of a potassium-transporting ATPase subunit beta (human) when measured in cerebrospinal fluid. The trait is level of potassium-transporting ATPase subunit beta (human) in cerebrospinal fluid (OBA_2058032, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid potassium-transporting ATPase subunit beta (human) amount.