A compound attribute that is the ratio of amount of cytosolic 5'-nucleotidase 3A (human) in blood to amount of secernin-1 (human) in blood. The trait is NT5C3A/SCRN1 protein level ratio in blood (OBA_2055207, an Ontology of Biological Attributes id). Also known as: the ratio of amount of cytosolic 5'-nucleotidase 3A (human) in blood to amount of secernin-1 (human) in blood.