Just doing research. I am really having a hard time understanding this process and how it would even be considered. Yes, I understand that it is associated with deficiencies/abnormalities in the immune system but they thought I had this 12 years ago and tested me for it. My most recent hospitalization involved a bone marrow biopsy as well, yet here we go again. I am willing to endure any test they come up with but the same test, especially one this intrusive, makes no sense to me.