I got these results last week. Pretty much the only difference between these results and the last ones is that the IgA is about 200 mg/dL higher. Last time, it was 663. The m-spikes are the same. This time, the kappa/lambda free light chain ratio is just inside the normal range. IgM and IgG are suppressed, and at about the same levels they were in October. Why the increase in IgA? My doctor suggested that it may simply be a normal immune response to something.