A compound attribute that is the ratio of amount of lithostathine-1-alpha (human) in blood to amount of regenerating islet-derived protein 3-alpha (human) in blood. The trait is REG1A/REG3A protein level ratio in blood (OBA_2053228). Also known as: the ratio of amount of lithostathine-1-alpha (human) in blood to amount of regenerating islet-derived protein 3-alpha (human) in blood.