The amount of a transmembrane gamma-carboxyglutamic acid protein 4 (human) when measured in cerebrospinal fluid. The trait is OBA_2080827 (level of transmembrane gamma-carboxyglutamic acid protein 4 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid transmembrane gamma-carboxyglutamic acid protein 4 (human) amount.