为探讨盲样考核和加标回收试验的实施方法,提高其在实验室能力评定活动中的有效性,待现场试验项目及盲样相关特性量的适宜性确认后,建立盲样考核信息表和作业指导书;简易盲样及加标样品参考相应项目的分析方法制备。现场试验项目对应盲样相关特性量适宜性的确认,可去除不适宜的项目;盲样考核信息表和作业指导的建立可排除非实际能力的误判,该方法可提高盲样考核和加标回收试验在实验室能力评定活动中的有效性。 In order to explore the implementation methods of blind sample test and spike recovery test and improve their effectiveness in laboratory capability assessment activities, after the suitability of field test items and blind-like related characteristic quantities are confirmed, a blind sample assessment information table and Work instructions; simple blind and spiked samples reference to the analysis of the corresponding project preparation. The test items of the field correspond to the appropriateness of blindness-related features, which can remove inappropriate items. The establishment of the blind-like information table and operation guidance can eliminate the misjudgment of non-actual ability. This method can improve the blind-like test and the standard addition Recycling test effectiveness in laboratory proficiency testing.