Review Question - QID 108939

A 35-year-old male presents to his primary care physician complaining of a one-month history of progressively worsening fatigue. He sought medical attention because this has affected his ability to complete his work as a graduate student. As a child, he was hospitalized for hemolytic uremic syndrome. His past medical history is also notable for diabetes mellitus and obesity. He takes metformin and glyburide. He does not smoke and drinks alcohol occasionally. His family history is notable for chronic lymphocytic leukemia in his paternal uncle and stroke in his father. His temperature is 99.9°F (37.7°C), blood pressure is 100/70 mmHg, pulse is 110/min, and respirations are 18/min. Physical examination reveals diffuse pallor. Hematologic labs are shown below:
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