The amount of a 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (human) when measured in blood. The trait is amount of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (human) in blood (Ontology of Biological Attributes term OBA_2052261). Also known as: blood 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (human) amount.