The amount of a group XIIA secretory phospholipase A2 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes id OBA_2080832 (level of group XIIA secretory phospholipase A2 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid group XIIA secretory phospholipase A2 (human) amount.