A compound attribute that is the ratio of amount of dual specificity mitogen-activated protein kinase kinase 6 (human) in blood to amount of protein phosphatase 1 regulatory subunit 12A (human) in blood. The trait is MAP2K6/PPP1R12A protein level ratio in blood (Ontology of Biological Attributes term OBA_2053831). Also known as: the ratio of amount of dual specificity mitogen-activated protein kinase kinase 6 (human) in blood to amount of protein phosphatase 1 regulatory subunit 12A (human) in blood.