What is the function of the enzyme Lactate Dehydrogenase in the context of hemoglobin metabolism?

A To convert lactate to pyruvate
B To regulate the synthesis of hemoglobin
C To catalyze the oxidation of hemoglobin to methemoglobin
D To generate NADH for the reduction of methemoglobin ✓

Explanation

Lactate Dehydrogenase plays a role in the regeneration of NADH, which is necessary for the reduction of methemoglobin to normal hemoglobin.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Medium MEDICAL Confidence: high