NUDT5/RWDD1 protein level ratio in blood (OBA_2055138, an Ontology of Biological Attributes entry) can be described as follows. A compound attribute that is the ratio of amount of ADP-sugar pyrophosphatase (human) in blood to amount of RWD domain-containing protein 1 (human) in blood. Also known as: the ratio of amount of ADP-sugar pyrophosphatase (human) in blood to amount of RWD domain-containing protein 1 (human) in blood.