Graves' Disease: Acquired Cause of a Moderate Increase in Hemoglobin A2 Level.

Background: Hyperthyroidism can lead to diverse hematological disorders, such as microcytosis and a mild increase in hemoglobin A2 fraction.

Methods: This study reported a 31-year-old woman of Moroccan origin recently diagnosed with Graves' disease. Her blood tests revealed microcytosis, hypochromia, and a normal ferritin level.