Abstract: Objective The homogeneity and stability of peptidase-3 samples of the 2021 proficiency testing were studied. Method The homogeneity and stability of peptidase-3 samples were tested according to CNAS-CL04 and GB / T 14927. 1—2008. The stability of the samples under four temperatures (37 ℃ , room temperature, 4 ℃ and -20 ℃ ) and transport conditions were investigated. Result The peptidase-3 samples were uniformly tested. It can be stable for 6 h at 37 ℃ and stable for 7 d at room temperature. At 4 ℃ , it can be stable for 4 weeks. Under the condition of -20 ℃ , it can be stable for 2 months and stable for 7 d under transportation conditions. Conclusion The homogeneity and stability of the peptidase-3 samples met the requirements of the proficiency testing.

Key words: laboratory animals, proficiency testing, biochemical markers, peptidase 3, stability

摘要： 目的 对 2021 年能力验证计划肽酶-3 样本的均匀性和稳定性进行研究。 方法 根据 CNAS-CL04 和 GB / T14927. 1—2008,对肽酶-3 样本进行均匀性和稳定性检验。 考察 4 个温度( 37 ℃ ,室温,4 ℃ 和- 20 ℃ ) 条件下和运输条件下的样本稳定性。 结果 肽酶-3 样本,均匀性检验合格。 在 37 ℃ 条件下可以稳定 6 h;在室温条件下可以稳定 7 d;在 4 ℃ 条件下,可以稳定 4 周;-20 ℃ 条件下,可以稳定 2 个月;在运输条件下,可以稳定 7 d。 结论 肽酶-3 样本的均匀性和稳定性检验结果满足开展能力验证计划的要求。

关键词: 实验动物, 能力验证, 生化标记, 肽酶-3, 稳定性