The amount of a aromatic-L-amino-acid decarboxylase (human) when measured in cerebrospinal fluid. The trait is level of aromatic-L-amino-acid decarboxylase (human) in cerebrospinal fluid (OBA_2057355, an Ontology of Biological Attributes id). Also known as: cerebrospinal fluid aromatic-L-amino-acid decarboxylase (human) amount.