The amount of a tyrosyl-DNA phosphodiesterase 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes id OBA_2081267 (level of tyrosyl-DNA phosphodiesterase 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid tyrosyl-DNA phosphodiesterase 1 (human) amount.