The amount of a tyrosine-protein phosphatase non-receptor type substrate 1 (human) when measured in cerebrospinal fluid. The trait is level of tyrosine-protein phosphatase non-receptor type substrate 1 (human) in cerebrospinal fluid (OBA_2058358). Also known as: cerebrospinal fluid tyrosine-protein phosphatase non-receptor type substrate 1 (human) amount.