A simple and accurate HPLC-MS/MS method was developed and validated for quantifying levodopa in human plasma for bioequivalence studies.
Validated levodopa assay supports bioequivalence testing; leaves open routine clinical adoption without further validation.
A sensitive, accurate and simple method using HPLC-MS/MS was developed and validated for levodopa quantitation in human plasma. Analysis was achieved on a pursuit® C18 analytical column (5 µm; 150 x 4.6 mm i.d.) using a mobile phase (methanol and water , 90:10, v/v) containing formic acid 0.5% v/v, after extracting the samples using a simple protein plasma precipitation with perchloric acid. The developed method was validated in accordance with ANVISA guidelines and was successfully applied to a bioequivalence study in 60 healthy volunteers demonstrating the feasibility and reliability of the proposed method.
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Martins et al. (2013) studied this question.
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