The amount of a N-acetylglucosamine-1-phosphotransferase subunit gamma (human) when measured in cerebrospinal fluid. The trait is level of N-acetylglucosamine-1-phosphotransferase subunit gamma (human) in cerebrospinal fluid (Ontology of Biological Attributes id OBA_2081554). Also known as: cerebrospinal fluid N-acetylglucosamine-1-phosphotransferase subunit gamma (human) amount.