Interference of hyperleukocytosis in red blood cell count

![Figure][1] A 91-year-old woman presented with asthenia and fever. Blood count showed hemoglobin of 83 g/L, white blood cell count of 470 × 109/L, and platelet count of 185 × 109/L. The anemia was macrocytic (mean corpuscular volume [MCV]: 107.9 fL) and hypochromic (mean corpuscular