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. 2021 Mar 10;1171:122641. doi: 10.1016/j.jchromb.2021.122641

Fig. 2.

Fig. 2

Fig. 2

LC-MS/MS chromatograms of A) the lower limit of quantification (LLOQ) with the accompanying internal standard, B) the upper limit of quantification (ULOQ) with the accompanying internal standard, C) an internal standard only plasma extract, and D) a blank plasma extract. All chromatograms shown correspond to primary/quantifier ion transitions.