A compound attribute that is the ratio of amount of dipeptidyl peptidase 2 (human) in blood to amount of tripeptidyl-peptidase 1 (human) in blood. The trait is DPP7/TPP1 protein level ratio in blood (Ontology of Biological Attributes id OBA_2053284). Also known as: the ratio of amount of dipeptidyl peptidase 2 (human) in blood to amount of tripeptidyl-peptidase 1 (human) in blood.