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. Author manuscript; available in PMC: 2015 Jan 15.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2013 Dec 3;0:225–232. doi: 10.1016/j.jchromb.2013.11.054

Figure 2.

Figure 2

Figure 2

Representative chromatograms obtained by applying the present method to: A.) a double blank extracted EDTA-plasma sample overlaid with the lowest standard (5 ng/mL); B.) a mid-range quality control sample (450 ng/mL).