A compound attribute that is the ratio of amount of ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 (human) in blood to amount of tumor necrosis factor receptor superfamily member 19L (human) in blood. The trait is Ontology of Biological Attributes term OBA_2054198 (CD38/RELT protein level ratio in blood). Also known as: the ratio of amount of ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 (human) in blood to amount of tumor necrosis factor receptor superfamily member 19L (human) in blood.