The amount of a uracil phosphoribosyltransferase homolog (human) when measured in cerebrospinal fluid. The trait is level of uracil phosphoribosyltransferase homolog (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2080306). Also known as: cerebrospinal fluid uracil phosphoribosyltransferase homolog (human) amount.