Andy-
Dr. Roman suspects that it is killing the faulty RBC's. It might be an over-reaction to whatever virus I had while in hospital with the thal and Hb crisis, and it just doesn't know how to wind down. Whatever it is, she says Dr. Sivakumar can tell what it is doing and why by pathology after its removed....Thus not taking the bone marrow, and doing two procedures to find out one cause. Although, I have to say I was surprised she didn't want to look at the effect of the other Hb disorder on the marrow.