Determination of the antimalarial drug piperaquine in small volume pediatric plasma samples by LC-MS/MS

• Aim: Determination of piperaquine (PQ) in pediatric plasma requires a method with a small sample volume. Results: We report a sensitive LC-MS/MS method for quantitation of PQ with only 25 mu l human plasma. Using a deuterated internal standard (PQ-d(6)), an analytical PFP column, APCI(+) as the ion source and MRM (535/288 for PQ and 541/294 for the IS) for detection, the method has a linear calibration range of 1.5-250 ng/ml with a runtime of 3.0 min per sample. The method was applied to plasma samples from children. Conclusion: The developed LC-MS/MS method is suitable for pediatric studies with small volume plasma samples collected via capillary tubes. One limitation was the performance of PFP columns varied among different brands.

Subject headings

NATURVETENSKAP  -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)

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