A compound attribute that is the ratio of amount of glutathione S-transferase A1 (human) in blood to amount of phenazine biosynthesis-like domain-containing protein (human) in blood. The trait is Ontology of Biological Attributes id OBA_2053452 (GSTA1/PBLD protein level ratio in blood). Also known as: the ratio of amount of glutathione S-transferase A1 (human) in blood to amount of phenazine biosynthesis-like domain-containing protein (human) in blood.