Home/Analyses/Biochemical tests/M-Gradient, Typing. Serum Protein Electrophoresis (SPEP), Immunofixation with Antisera (IgG, IgA, IgM, Kappa, Lambda), Quantification of M-ProteinBack to analyses4051M-Gradient, Typing. Serum Protein Electrophoresis (SPEP), Immunofixation with Antisera (IgG, IgA, IgM, Kappa, Lambda), Quantification of M-Protein