A compound attribute that is the ratio of amount of E3 ubiquitin-protein ligase NRDP1 (human) in blood to amount of SH2B adapter protein 3 (human) in blood. The trait is RNF41/SH2B3 protein level ratio in blood (Ontology of Biological Attributes id OBA_2053146). Also known as: the ratio of amount of E3 ubiquitin-protein ligase NRDP1 (human) in blood to amount of SH2B adapter protein 3 (human) in blood.