label: Decreased erythrocyte nicotinamide adenine dinucleotide-cytochrome b5 reductase activity
label_lc: decreased erythrocyte nicotinamide adenine dinucleotide-cytochrome b5 reductase activity
description: "The activity of nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase in erythrocytes (red blood cells) is below the lower limit of normal."