level of high affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2056433) is the amount of a high affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid high affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A (human) amount.