What is the role of quantitative immunoglobulin (IgG, IgA, IgM) testing in the workup of multiple myeloma (MM)?

Updated: Jul 15, 2019
  • Author: Dhaval Shah, MD; Chief Editor: Emmanuel C Besa, MD  more...
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Answer

Suppression of nonmyelomatous immunoglobulin is a minor diagnostic criterion for MM. The level of MM protein (ie, M protein level), as documented by the immunoglobulin level, can be useful as a marker to assess the response to therapy.


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