<prompt> Diagnostic criteria of pure red cell aplasia PRCA includes all of the following, except:Severe anemiaReticulocyte count 1Normocellular marrowThrombocytopenia  <response>: Pure red cell aplasia: Selective depletion of erythroid precursors in bone marrow with consequent severe normocytic normochromic anemia reticulocytopenia. Diagnostic criteria for pure red cell aplasia are: Giant normoblasts in bone marrow Severe anemia Reticulocyte count 1 Normocellular marrow with mature erythroblasts 0.5. 