A compound attribute that is the ratio of amount of platelet glycoprotein VI (human) in blood to amount of stress-induced-phosphoprotein 1 (human) in blood. The trait is GP6/STIP1 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053432). Also known as: the ratio of amount of platelet glycoprotein VI (human) in blood to amount of stress-induced-phosphoprotein 1 (human) in blood.