Ontology of Biological Attributes entry OBA_2042671 (level of diphosphoinositol polyphosphate phosphohydrolase 1 in blood serum) is the amount of a diphosphoinositol polyphosphate phosphohydrolase 1 when measured in blood serum. Also known as: blood serum diphosphoinositol polyphosphate phosphohydrolase 1 amount.