MedlinePlus Medical Encyclopedia: Cytochrome b5 reductase

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Cytochrome b5 reductase

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Illustrations	Definition

Illustrations

Cytochrome b5 reductase blood test

Definition Return to top

Cytochrome b5 reductase is an enzyme in the blood. This enzyme makes sure that red blood cells have adequate iron levels, and thus maximizes their oxygen-carrying capacity. An imbalance in this enzyme results in a condition known as methemoglobinemia.

Update Date: 5/6/2003

Updated by: David Webner, M.D., Department of Family Medicine, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.

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