Hi Mrs. T and welcome to our group,
Has your brother ever transfused? Has he taken anything to increase his Hb as you are doing with procrit? (I ask a lot of questions, both to help me answer and also because talking to patients is how I learn much of what I know). If he has not, it may soon come to that point for him. I am wondering if the bone marrow just wears itself out over the year of over production. I plan on researching this issue more and will report if I can find anything.