A compound attribute that is the ratio of amount of proline/serine-rich coiled-coil protein 1 (human) in blood to amount of Ras-related protein Rab-37 (human) in blood. The trait is PSRC1/RAB37 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053205). Also known as: the ratio of amount of proline/serine-rich coiled-coil protein 1 (human) in blood to amount of Ras-related protein Rab-37 (human) in blood.