Simultaneous Quantification of Aspirin, Its Metabolite Salicylic Acid, and Salvianolic Acid B in Human Plasma Using UPLC-MS/MS

Figure 2

Representative MRM chromatograms of Sal B ASA, SA, and IS in plasma. (a) Blank plasma. (b) LLOQ sample (Sal B ASA, and SA at 5 ng/mL; IS at 20 ng/mL). (c) Plasma sample 4 h after administration.