Research Article

Quantification of Photocyanine in Human Serum by High-Performance Liquid Chromatography-Tandem Mass Spectrometry and Its Application in a Pharmacokinetic Study

Figure 3

Linear calibration curve of photocyanine from the peak-area analyte/peak-area IS ratios versus concentrations in human serum using a weighting factor (1/ ), varying linearly over the concentration range of 20–2000 ng/mL. The equation for the curve was ( ).
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