Methemoglobinemia laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief:

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Overview

Congenital (Hereditary) Methemoglobinemia

There are three main congenital conditions that lead to methemoglobinemia:

1. Cytochrome b5 reductase deficiency and pyruvate kinase deficiency

2. G6PD deficiency

3. Presence of abnormal hemoglobin.

Acquired or Acute Methemoglobinemia

Most common cause include different oxidant drugs, toxins or chemicals