Cytochrome b5 reductase

Cytochrome b5 reductase is an enzyme in the blood. It controls the amount of iron in your red blood cells, and helps the cells carry the normal amount of oxygen.

Persons who do not have enough of this enzyme may develop a condition called methemoglobinemia.

Cytochrome b5 reductase blood test

Cytochrome b5 reductase is a blood enzyme that serves to maintain adequate iron levels in the red blood cells to maximize their oxygen-carrying capacity.