PDGFB/PRKAR1A protein level ratio in blood (OBA_2054055) can be described as follows. A compound attribute that is the ratio of amount of platelet-derived growth factor subunit B (human) in blood to amount of cAMP-dependent protein kinase type I-alpha regulatory subunit (human) in blood. Also known as: the ratio of amount of platelet-derived growth factor subunit B (human) in blood to amount of cAMP-dependent protein kinase type I-alpha regulatory subunit (human) in blood.