The amount of a Ras GTPase-activating protein-binding protein 1 (human) when measured in cerebrospinal fluid. The trait is level of Ras GTPase-activating protein-binding protein 1 (human) in cerebrospinal fluid (OBA_2058663, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid Ras GTPase-activating protein-binding protein 1 (human) amount.