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. Author manuscript; available in PMC: 2014 Jan 28.
Published in final edited form as: Am J Clin Pathol. 2012 Oct;138(4):609–613. doi: 10.1309/AJCPT6OWWMHITA1Y

Figure 1.

Figure 1

Typical serum protein electrophoresis and immunofixation electrophoresis (IFE) results in a patient with IFE monoclonal gammopathy of undetermined significance arising from a small M protein in the γ fraction. A serum protein electrophoresis gel (PEL) is shown with its electrophoretogram as well as the IFE gel. A small, fuzzy band is visible on the PEL, and is immunotyped as a small monoclonal IgG κ protein. The asymmetry in the γ fraction is indicated on the electrophoretogram with an arrow. If this region of the γ fraction is demarcated as a separate fraction, the monoclonal protein would account for approximately 10% of the area contained in the M spike. Alb, albumin fraction.