i have a question regarding bloodwork in SCLS patients. I have been getting IVIG 2ml/kg every four weeks for three years. My bloodwork is showing a increase in serum proteins specifically IgG Kappa monoclonal protein. I am aware that our syndrome will show a spike in M protein but just wondering does everyone on IVIG see a large increase in this M protein in their bloodwork? Does IVIG infusion alter the protein analysis on bloodwork causing a higher number? I have otherwise normal CBC and feel well.