The amount of a serine/threonine-protein kinase 17B (human) when measured in cerebrospinal fluid. The trait is level of serine/threonine-protein kinase 17B (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2056439). Also known as: cerebrospinal fluid serine/threonine-protein kinase 17B (human) amount.