The amount of a protein O-glucosyltransferase 3 (human) when measured in cerebrospinal fluid. The trait is level of protein O-glucosyltransferase 3 (human) in cerebrospinal fluid (OBA_2059508, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid protein O-glucosyltransferase 3 (human) amount.