My immunoglobulins have not recovered since diagnosis 2 ½ years ago, even after SCT. I was put on IVIG in March, after back-to-back respiratory infections. I have been receiving it monthly since then, however I have had 2 more hospitalizations since then. Has anyone had similar? The specialist says my immune system is likely damaged permanently. IgA and IgM are too low to measure. IgG won’t stay jp between infusions.