LC–MS3 Strategy for Quantification of Carbamazepine in Human Plasma and Its Application in Therapeutic Drug Monitoring |
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| Authors: | Dongxiao Ma Zhengchao Ji Haiwei Cao Jing Huang Lei Zeng Lei Yin |
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| Institution: | 1.Department of Clinical Laboratory, The First Hospital of Jilin University, Jilin University, Changchun 130021, China; (D.M.); (Z.J.); (H.C.);2.The Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Jilin University, Changchun 130021, China;3.School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China |
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| Abstract: | This study developed a detection method based on the strategy of HPLC/MS3 and verified its suitability by quantifying carbamazepine in human plasma. The high-performance liquid chromatography–tandem mass spectrometry (HPLC/MS3) system was performed using a Shimadzu UFLC XR liquid chromatography and a SCIEX QTRAP® 5500 linear ion trap triple quadrupole mass spectrometer. The specific operation was as follows: the sample protein was firstly precipitated using methanol, then carbamazepine and carbamazepine-D2N15 were separated on an ACQUITY UPLC HSS T3 column using the gradient elution with solvent A (0.1% formic acid) and solvent B (0.1% formic acid in acetonitrile) at a flow rate of 0.25 mL/min. Each sample was run for 7 min. This method was validated for various parameters including accuracy, precision, selectivity, linearity, LLOQ, etc. Only 5 μL of sample plasma could obtain the result of LLOD 0.5 µg/mL. The intra-day and inter-day precision was <8.23%, and accuracy was between −1.74% and 2.92%. This method was successfully used for monitoring the blood concentration of epilepsy patients after carbamazepine treatment. |
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| Keywords: | LC-MS3 carbamazepine therapeutic drug monitoring |
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