A compound attribute that is the ratio of amount of aminoacylase-1 (human) in blood to amount of glutathione S-transferase A1 (human) in blood. The trait is ACY1/GSTA1 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2055783). Also known as: the ratio of amount of aminoacylase-1 (human) in blood to amount of glutathione S-transferase A1 (human) in blood.