A compound attribute that is the ratio of amount of platelet glycoprotein VI (human) in blood to amount of leukocyte elastase inhibitor (human) in blood. The trait is GP6/SERPINB1 protein level ratio in blood (Ontology of Biological Attributes id OBA_2053430). Also known as: the ratio of amount of platelet glycoprotein VI (human) in blood to amount of leukocyte elastase inhibitor (human) in blood.