Figure. Testing of patient with G6PD deficiency and SARS-CoV-2 infection, United Kingdom. A) Blood film showing normochromic normocytic erythrocytes and a few hemighost cells. Hemighost cells are formed after oxidative hemolysis seen in G6DP deficiency. Hb is contracted to 1 pole of the cell, leaving an unfilled area enclosed by an intact membrane (original magnification ×100). B) Hb and metHb concentration during admission. Each arrow indicates a 3-unit erythrocyte transfusion. G6PD, glucose-6-phosphate dehydrogenase; Hb, hemoglobin; metHb, methemoglobin; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.