level of 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 (human) in cerebrospinal fluid (OBA_2081167) is the amount of a 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 (human) amount.