A compound attribute that is the ratio of amount of flavin reductase (NADPH) (human) in blood to amount of 26S proteasome non-ATPase regulatory subunit 9 (human) in blood. The trait is Ontology of Biological Attributes term OBA_2053302 (BLVRB/PSMD9 protein level ratio in blood). Also known as: the ratio of amount of flavin reductase (NADPH) (human) in blood to amount of 26S proteasome non-ATPase regulatory subunit 9 (human) in blood.