A compound attribute that is the ratio of amount of carbonic anhydrase 9 (human) in blood to amount of cobalamin binding intrinsic factor (human) in blood. The trait is CA9/CBLIF protein level ratio in blood (OBA_2054827). Also known as: the ratio of amount of carbonic anhydrase 9 (human) in blood to amount of cobalamin binding intrinsic factor (human) in blood.