A compound attribute that is the ratio of amount of glycogen [starch] synthase, muscle (human) in blood to amount of sushi domain-containing protein 1 (human) in blood. The trait is GYS1/SUSD1 protein level ratio in blood (OBA_2053111, an Ontology of Biological Attributes identifier). Also known as: the ratio of amount of glycogen [starch] synthase, muscle (human) in blood to amount of sushi domain-containing protein 1 (human) in blood.