A compound attribute that is the ratio of amount of osteoclast-associated immunoglobulin-like receptor (human) in blood to amount of signal-regulatory protein beta-1 isoforms 1/2 (human) in blood. The trait is OSCAR/SIRPB1 protein level ratio in blood (Ontology of Biological Attributes id OBA_2055145). Also known as: the ratio of amount of osteoclast-associated immunoglobulin-like receptor (human) in blood to amount of signal-regulatory protein beta-1 isoforms 1/2 (human) in blood.