Comparison of a Lc/ms Method with a Lc/uv Method for the Determination of Metformin in Plasma Samples
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چکیده
A LC/MS method for the analysis of the highly polar anti-diabetic drug metformin in plasma samples is compared to an ion-pair HPLC method with UV detection. Both methods showed good linearity in the concentration range of 50 to 2000 ng/mL, good precision and accuracy and similar sensitivity. The LC-MS method has the advantage of a simpler and faster preparation procedure, shorter analytical times and higher selectivity. Both methods were validated and successfully applied to bioequivalence studies of drugs containing metformin. Rezumat Lucrarea compară o metodă LC/MS de determinare a metforminei din probe de plasmă cu o metodă HPLC cu detecţie UV, având la bază un mecanism de formare de pereche ionică. Ambele metode sunt liniare în intervalul de concentraţii 50-2000 ng/mL, prezintă precizii şi exactităţi bune şi sensibilităţi apropiate. Metoda LC/MS are următoarele avantaje: o preparare a probei mai simplă şi mai rapidă, durată de analiză mai scurtă, selectivitate mai bună. Aceste metode au fost validate şi aplicate cu succes la analiza probelor de plasmă conţinând metformină din cadrul unor studii de bioechivalenţă.
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تاریخ انتشار 2010