Fig. 2From: Daily dose of metformin caused acute kidney injury with lactic acidosis: a case reportTypical chromatograms, calibration curve, and plot of the observed Met plasma levels in the patient. Typical chromatograms of A plasma spiked with Met (10 μg/mL) and internal standard (250 μg/mL) and B blank plasma. C Standard calibration curve of Met (N = 2). D Plot of the observed Met plasma levels in the patientBack to article page