A compound attribute that is the ratio of amount of integrin beta-1 (human) in blood to amount of lithostathine-1-beta (human) in blood. The trait is ITGB1/REG1B protein level ratio in blood (OBA_2055483). Also known as: the ratio of amount of integrin beta-1 (human) in blood to amount of lithostathine-1-beta (human) in blood.