The amount of a phospholipase A and acyltransferase 4 (human) when measured in cerebrospinal fluid. The trait is level of phospholipase A and acyltransferase 4 (human) in cerebrospinal fluid (Ontology of Biological Attributes identifier OBA_2081612). Also known as: cerebrospinal fluid phospholipase A and acyltransferase 4 (human) amount.