A compound attribute that is the ratio of amount of DNA fragmentation factor subunit alpha (human) in blood to amount of hematopoietic lineage cell-specific protein (human) in blood. The trait is DFFA/HCLS1 protein level ratio in blood (OBA_2053962, an Ontology of Biological Attributes term). Also known as: the ratio of amount of DNA fragmentation factor subunit alpha (human) in blood to amount of hematopoietic lineage cell-specific protein (human) in blood.