If you have severe aplastic anemia, at least two of the following are true: Your neutrophil count is less than 500 cells per millimeter (<500/mm<SUP>3</SUP>) Your platelet count is less than 20,000 cells per millimeter (<20,000/mm<SUP>3</SUP>) You have anemia and your reticulocyte count is less than 20,000 cells per millimeter (<20,000/mm<SUP>3</SUP>)