I just got my immunofixation report back and this is what it says. mmunofixation: There is a trace IgG kappa band in the gamma region with co-migrating lambda light chain Note: The trace IgG kappa's electrophoretic migration is similar to the therapeutic Daratumumab. Everything is the same except the co migrating lambda light chain. What does this mean.? I have IGG Kappa myeloma. And I am on darazalex.