The amount of a ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 (human) when measured in blood. The trait is amount of ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 (human) in blood (Ontology of Biological Attributes id OBA_2052303). Also known as: blood ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 (human) amount.