ARG1/PKLR protein level ratio in blood (Ontology of Biological Attributes entry OBA_2053930) can be described as follows. A compound attribute that is the ratio of amount of arginase-1 (human) in blood to amount of pyruvate kinase PKLR (human) in blood. Also known as: the ratio of amount of arginase-1 (human) in blood to amount of pyruvate kinase PKLR (human) in blood.