The amount of a isopentenyl-diphosphate Delta-isomerase 2 when measured in blood serum. The trait is Ontology of Biological Attributes entry OBA_2041972 (level of isopentenyl-diphosphate Delta-isomerase 2 in blood serum). Also known as: blood serum isopentenyl-diphosphate Delta-isomerase 2 amount.