You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All the following are criteria for diagnosing severe aplastic anemia except: and explain in detail?
D i.e. ANC <1500Ref: WHO, Hematopoietic System, page 221Explanation:Criteria for Aplastic Anemia (ASH)ClassificationCriteriaSevereBM cellularity <25% (or<50%if <30% of BM is hematopoietic cells) AND >2 of the following:* Peripheral blood neutrophil count <0.5x109/L* Peripheral blood platelet count <20x109/L* Peripheral blood reticulocyte count <20x109/LVery severeAs above, but peripheral blood neutrophil count must be <0.2x109/LNon-severeHypocellullar BM with peripheral blood values not meeting criteria for severe aplastic anemia