Abstract
Recently, the Brazilian Ministry of Agriculture, Livestock and Supply (MAPA) published a validation and analytical quality control guide called the “Guia de Validacao e Controle de Qualidade Analitica – Farmacos em Produtos para Alimentacao Animal e Medicamentos Veterinarios”, in order to guide officers and accredited laboratories in the validation of analytical methods for the quality control of veterinary medicines, drug contaminants in feed and depletion studies (residues of drugs in biological matrices). The aim of this study was to present a critical evaluation of the concepts and procedures defined in this document. The Guide was applied for the validation of chromatographic methods intended to be used for the quantification of antimicrobial and antiparasitic drugs in veterinary medicines. Methods for the determination of ivermectin, abamectin, sulfadiazine, sulfadimethoxine, sulfaquinoxaline, streptomycin, dihydrostreptomycin and florfenicol were validated using the Guide. Each validation parameter was evaluated and discussed. A total of 55 samples of veterinary drugs were analyzed.
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