The amount of a transmembrane gamma-carboxyglutamic acid protein 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes id OBA_2055993 (level of transmembrane gamma-carboxyglutamic acid protein 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid transmembrane gamma-carboxyglutamic acid protein 1 (human) amount.