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. Author manuscript; available in PMC: 2009 Sep 16.
Published in final edited form as: Circulation. 2008 Sep 2;118(12):1259–1267. doi: 10.1161/CIRCULATIONAHA.108.770669

Figure 3. ApoE levels measured by nephelometry correlate with apoE levels quantified by extracted ion chromatogram (XIC).

Figure 3

The peptides used for the extracted ion chromatograms were (A) AAT (AATVGSLAGQPLQER2+, m/z [M+2H]2+ 749.405) and (B) LKS (LKSWFEPLVEDMQR3+, m/z [M+3H]3+ 593.303). Nephelometry and mass spectrometry were performed on two different preparations of HDL3 from the same plasma sample. The solid line represents the fit, and the dashed lines show the 95% confidence intervals in linear regression analysis.