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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Clin Biochem. 2019 Dec 26;77:57–61. doi: 10.1016/j.clinbiochem.2019.12.010

Figure 2:

Figure 2:

(A) MALDI-TOF mass spectra of the patient sample (red) purified with IgG-specific magnetic beads, Protein A spin column, IgG-Fc-specific CaptureSelect reagents, and IgG-CH1-specific CaptureSelect reagents compared to that of a healthy volunteer (black). (B) MALDI-TOF mass spectra of the patient sample treated with PNGase F showing a shift toward lower m/z values compared to the sample without PNGase F (control).