CPB1/CTRC protein level ratio in blood (OBA_2054588) can be described as follows. A compound attribute that is the ratio of amount of carboxypeptidase B (human) in blood to amount of chymotrypsin-C (human) in blood. Also known as: the ratio of amount of carboxypeptidase B (human) in blood to amount of chymotrypsin-C (human) in blood.