A compound attribute that is the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of DnaJ homolog subfamily B member 1 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2055440 (CDKN1A/DNAJB1 protein level ratio in blood). Also known as: the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of DnaJ homolog subfamily B member 1 (human) in blood.