CXCL5/SERPINE1 protein level ratio in blood (OBA_2055106, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of C-X-C motif chemokine 5 (human) in blood to amount of plasminogen activator inhibitor 1 (human) in blood. Also known as: the ratio of amount of C-X-C motif chemokine 5 (human) in blood to amount of plasminogen activator inhibitor 1 (human) in blood.