A compound attribute that is the ratio of amount of flavin reductase (NADPH) (human) in blood to amount of carbonic anhydrase 1 (human) in blood. The trait is Ontology of Biological Attributes id OBA_2053295 (BLVRB/CA1 protein level ratio in blood). Also known as: the ratio of amount of flavin reductase (NADPH) (human) in blood to amount of carbonic anhydrase 1 (human) in blood.