The amount of a E3 ubiquitin-protein ligase RAD18 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes id OBA_2081234 (level of E3 ubiquitin-protein ligase RAD18 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid E3 ubiquitin-protein ligase RAD18 (human) amount.