The amount of a chymotrypsin-like elastase family member 3B (human) when measured in cerebrospinal fluid. The trait is level of chymotrypsin-like elastase family member 3B (human) in cerebrospinal fluid (OBA_2056914, an Ontology of Biological Attributes id). Also known as: cerebrospinal fluid chymotrypsin-like elastase family member 3B (human) amount.