Ontology of Biological Attributes id OBA_2041922 (level of 15-hydroxyprostaglandin dehydrogenase [NAD(+)] in blood serum) is the amount of a 15-hydroxyprostaglandin dehydrogenase [NAD(+)] when measured in blood serum. Also known as: blood serum 15-hydroxyprostaglandin dehydrogenase [NAD(+)] amount.