My Immunoglobulin M came back at 278. The normal range is 48-271. I realize this is only slightly above the high end of normal but I am still concerned. My doctor's office is not being much help and all they are saying is "inflammation" and "arthritis". I DON'T HAVE ARTHRITIS! I have muscle pain and I'm tired of not getting any answers. Please answer if you can help!! THANK YOU!!