The amount of a 5'(3')-deoxyribonucleotidase, cytosolic type when measured in blood serum. The trait is Ontology of Biological Attributes identifier OBA_2042648 (level of 5'(3')-deoxyribonucleotidase, cytosolic type in blood serum). Also known as: blood serum 5'(3')-deoxyribonucleotidase, cytosolic type amount.