, Volume 72, Issue 7–8, pp 627–633 | Cite as

Simultaneous Determination of Levodopa, Benserazide and 3-O-Methyldopa in Human Serum by LC–MS–MS



For the first time a sensitive, specific and rapid LC–MS–MS assay is presented for the simultaneous determination of levodopa (L-DP), 3-O-methyldopa (3-OMD) and benserazide (BSZ) in human serum. The three compounds were extracted from human serum by protein precipitation followed by dilution of the supernatant with aqueous formic acid. In serum, linearity was observed between 50 and 1,000 ng mL−1 of L-DP, 3-OMD and BSZ, respectively. Intra-day and inter-day RSD values were below 10.56 and 6.22% at concentrations of 120, 360 and 720 ng mL−1. The presented method showed excellent specificity and sensitivity compared with other methods reported. It was applied to a pharmacokinetic study and demonstrated its applicability to pre-clinical and clinical pharmacological research.


Column liquid chromatography-tandem mass spectrometry Levodopa Benserazide 3-O-methyldopa 


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Copyright information

© Vieweg+Teubner Verlag | Springer Fachmedien Wiesbaden GmbH 2010

Authors and Affiliations

  1. 1.School of PharmacyFudan UniversityShanghaiPeople’s Republic of China
  2. 2.Department of Pharmacy, Huashan HospitalFudan UniversityShanghaiPeople’s Republic of China

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