A compound attribute that is the ratio of amount of carboxypeptidase B (human) in blood to amount of lithostathine-1-beta (human) in blood. The trait is OBA_2054592 (CPB1/REG1B protein level ratio in blood). Also known as: the ratio of amount of carboxypeptidase B (human) in blood to amount of lithostathine-1-beta (human) in blood.