Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 54, Issue 4, Pages 826-829Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2010.11.009
Keywords
Calibration standards; Human plasma matrix; Pre-clinical bioanalytical LC-MS/MS methods; Reduced animal use; 3Rs; Incurred sample reproducibility (ISR)
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The option, for practical and ethical reasons, to replace animal plasma with human plasma for calibration standards was successfully applied to 73 analytical methods developed in our laboratory during the last years. The animals used for obtaining blank plasma could then be reduced with a number corresponding to about 25% of mice or 5% of rats in ordinary one-month toxicology studies. This is of important public concern and also in accordance with the 3R-strategy. The methods were successfully validated for determination of drug concentrations in plasma from rat, dog, mouse, rabbit and cynomolgus monkey. Reproducibility of study samples from dosed animals was established, showing a mean accuracy of 100.8% with a CV of 7.2% (n = 1339). The purpose of this paper is to present a scientific basis for the alternative approach to adopt human plasma matrix for calibration standards, which will reduce animal use, without compromising the quality of appropriately validated assays. Additional advantages are cheaper and simplified plasma maintenance and the possibility to validate methods for several species in the same analytical batch. (C) 2010 Elsevier B.V. All rights reserved.
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