The amount of a procollagen galactosyltransferase 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2059882 (level of procollagen galactosyltransferase 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid procollagen galactosyltransferase 1 (human) amount.