If all those levels are normal, it would suggest you are not making enough red blood cells to me or that your body is doing too good a job at removing them. Granted, I am not a physician. There is some form of blood test I believe to determine if your body is destroying an excessive amount of rbc's. As for lack of production, I am not sure how they would test that, maybe biopsy from the femur? In any case, I do not envy you. Anemia isn't fun.