A compound attribute that is the ratio of amount of egl nine homolog 1 (human) in blood to amount of phosphoinositide 3-kinase adapter protein 1 (human) in blood. The trait is EGLN1/PIK3AP1 protein level ratio in blood (OBA_2055613, an Ontology of Biological Attributes id). Also known as: the ratio of amount of egl nine homolog 1 (human) in blood to amount of phosphoinositide 3-kinase adapter protein 1 (human) in blood.