A compound attribute that is the ratio of amount of protein canopy homolog 4 (human) in blood to amount of signal transducer and activator of transcription 5B (human) in blood. The trait is CNPY4/STAT5B protein level ratio in blood (Ontology of Biological Attributes entry OBA_2054906). Also known as: the ratio of amount of protein canopy homolog 4 (human) in blood to amount of signal transducer and activator of transcription 5B (human) in blood.