The amount of a 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase delta-3 (human) when measured in cerebrospinal fluid. The trait is OBA_2059779 (level of 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase delta-3 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase delta-3 (human) amount.