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Background:Animal models are widely used in scientific research in order to obtain information from a whole organism under a specific set of experimental conditions. Various lineages of mice have been used to investigate diseases and new therapeutic strategies, and, consequently, hematological and biochemical tests in these labora-tory animals are essential to validate scientific studies. Our study seeks to establish reference values for hematological and biochemical parameters of four lineages of mice. Methods:We evaluated the hematological and biochemical profiles of 20 males and 20 females from the lineages Swiss (heterogeneous), BALB/c and C57BL/6 (isogenic), and B6D2F1 (hybrid), totaling 160 mice. Analysis were standardized using the sys-tems pocH-100iV Diff ? for 19 hematological parameters and VITROS ? 350 for 12 biochemical parameters. Results:Results are shown as means and standard deviation, grouped by lineage and genre. Comparing the values obtained in this study with the values from previousstudies, some variations were detected, which could be explained by differences in methodologies or individual variability. Conclusion:Thus our study shows that knowledge and disclosure of the values of physiological parameters of laboratory animals is necessary, and emphasises the importance of considering variations influenced by gender, lineage and genotype in the choice of the best experimental model.