A compound attribute that is the ratio of amount of nucleobindin-2 (human) in blood to amount of thioredoxin domain-containing protein 5 (human) in blood. The trait is NUCB2/TXNDC5 protein level ratio in blood (Ontology of Biological Attributes id OBA_2055086). Also known as: the ratio of amount of nucleobindin-2 (human) in blood to amount of thioredoxin domain-containing protein 5 (human) in blood.