The amount of a serine/threonine-protein kinase TBK1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes term OBA_2081505 (level of serine/threonine-protein kinase TBK1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid serine/threonine-protein kinase TBK1 (human) amount.