level of tyrosine-protein phosphatase non-receptor type 4 (human) in cerebrospinal fluid (OBA_2057569, an Ontology of Biological Attributes identifier) is the amount of a tyrosine-protein phosphatase non-receptor type 4 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid tyrosine-protein phosphatase non-receptor type 4 (human) amount.