The amount of a phosphoenolpyruvate carboxykinase, cytosolic [GTP] (human) when measured in cerebrospinal fluid. The trait is level of phosphoenolpyruvate carboxykinase, cytosolic [GTP] (human) in cerebrospinal fluid (OBA_2057712, an Ontology of Biological Attributes identifier). Also known as: cerebrospinal fluid phosphoenolpyruvate carboxykinase, cytosolic [GTP] (human) amount.