The amount of a N-alpha-acetyltransferase 20 (human) when measured in cerebrospinal fluid. The trait is level of N-alpha-acetyltransferase 20 (human) in cerebrospinal fluid (Ontology of Biological Attributes identifier OBA_2058282). Also known as: cerebrospinal fluid N-alpha-acetyltransferase 20 (human) amount.