What is the role of immunoelectrophoresis and immunofixation studies in the workup of Waldenström macroglobulinemia?

Updated: Feb 01, 2021
  • Author: Karen Seiter, MD; Chief Editor: Emmanuel C Besa, MD  more...
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Answer

Immunoelectrophoresis and immunofixation studies help to identify the type of immunoglobulin, the clonality of the light chain, and the monoclonality and quantitation of the paraprotein. High-resolution electrophoresis and serum and urine immunofixation are recommended to help identify and characterize the monoclonal IgM paraprotein. The light chain of the monoclonal protein is usually the kappa light chain. At times, patients with Waldenström macroglobulinemia may exhibit more than 1 M protein.


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