A compound attribute that is the ratio of amount of E3 ubiquitin-protein ligase NRDP1 (human) in blood to amount of ubiquitin carboxyl-terminal hydrolase 8 (human) in blood. The trait is Ontology of Biological Attributes identifier OBA_2053148 (RNF41/USP8 protein level ratio in blood). Also known as: the ratio of amount of E3 ubiquitin-protein ligase NRDP1 (human) in blood to amount of ubiquitin carboxyl-terminal hydrolase 8 (human) in blood.