ARHGAP1/SPARC protein level ratio in blood (OBA_2053933) can be described as follows. A compound attribute that is the ratio of amount of Rho GTPase-activating protein 1 (human) in blood to amount of SPARC protein (human) in blood. Also known as: the ratio of amount of Rho GTPase-activating protein 1 (human) in blood to amount of SPARC protein (human) in blood.