The amount of a 2',3'-cyclic-nucleotide 3'-phosphodiesterase (human) when measured in cerebrospinal fluid. The trait is level of 2',3'-cyclic-nucleotide 3'-phosphodiesterase (human) in cerebrospinal fluid (OBA_2056946). Also known as: cerebrospinal fluid 2',3'-cyclic-nucleotide 3'-phosphodiesterase (human) amount.