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Updated: Feb 14, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
Development and validation of an HPLC-MS/MS method with QuEChERS extraction using isotopic dilution to simultaneously
Maïlie Saint-Hilaire1, Chanthadary Inthavong2, Thomas Bertin2
1UR AFPA - INRA USC 340 - Université de Lorraine, 2 avenue de la Forêt de Haye, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France.
Abstract:
A QuEChERS extraction method followed by HPLC-MS/MS analysis was developed to simultaneously analyze chlordecone and its metabolite chlordecol in animal livers. The overall method was validated with accuracy profiles according to the French Standard NF V03-110 and European Union guidelines. The validation was performed on bovine, ovine and porcine liver samples. Linearity, matrix effect, accuracy, within-laboratory repeatability, specificity, LOQ, Q/q relative ion intensities, and uncertainty were reported. Recoveries were between 70% and 120%. LOQs of 1.36 µg chlordecone kg-1 and 2.50 µg chlordecol kg-1 of fresh liver were found. Twelve contaminated livers of bovine, ovine and porcine origin from the French West Indies or samples from in vivo studies were analyzed. In these liver samples from contaminated animals, chlordecone was quantified at concentrations higher than the maximum residue limit and chlordecol in very low amounts in all the samples. In addition, these results confirm that chlordecone can be metabolized in ruminant species.
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