Objective To objectively evaluate the homogeneity and stability of qualitative samples by statistical methods. Methods The beef, lamb and duck-derived components were detected separately by real-time PCR. The values in positive results were analyzed by one-way ANOVA method to evaluating the homogeneity of samples. The stability of samples was evaluated by the linear regression method. Results F＜F0.05(9,10)=3.02 and P>0.05. There was no significant difference between groups and the samples were homogenous. There was no statistical difference in the linear slope of the linear regression analysis, which indicated that the sample remained stable during the test. Conclusion The homogeneity and stability of the samples used in proficiency tests of animal-derived materials detection can be deduced more precisely through statistical methods.
标题：运用统计学方法对能力验证定性样品的均匀性和稳定性进行评价
英文标题：Evaluation of the homogeneity and stability of qualitative samples in the proficiency test with statistical methods
