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. Author manuscript; available in PMC: 2014 May 20.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Sep 15;907:117–125. doi: 10.1016/j.jchromb.2012.09.018

Figure 2.

Figure 2

Representative chromatograms of plasma samples. For each analyte, chromatograms of the analyte and IS were shown for both a spiked standard at LLOQ (1 ng/mL) (A) and a blank sample (B). The concentrations of IS were all 50 ng/mL.