I had the anti-MAG test as a final confirmation in my diagnosis of IgM MGUS. Prior to this, electrophoresis tests showed elevated IgM, but the anti-MAG test was needed to be sure before prescribing treatment with Rituxan (small possibility of dangerous side effects). The test was performed at the University of Washington in Missouri. Cost was about $800.
Thank you Carol for your posting about blood cancers. It is known that there is a 1% annual transfer rate from MGUS to multiple myeloma or Waldenstroms macroglobulenemia (spelling?). Scary already and more to worry about. Best to enjoy life now to its fullest. Who knows about tomorrow?