A compound attribute that is the ratio of amount of dickkopf-related protein 4 (human) in blood to amount of lithostathine-1-alpha (human) in blood. The trait is DKK4/REG1A protein level ratio in blood (OBA_2053623). Also known as: the ratio of amount of dickkopf-related protein 4 (human) in blood to amount of lithostathine-1-alpha (human) in blood.