Which of the following conditions is characterized by an increase in the levels of methemoglobin in the blood?

A Anemia
B Polycythemia
C Methemoglobinemia ✓
D Sickle cell disease

Explanation

Methemoglobinemia is a condition characterized by an increase in the levels of methemoglobin in the blood, which can lead to tissue hypoxia.

Source

Robbins and Cotran Pathologic Basis of Disease
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Easy MEDICAL Confidence: high