卫生检验理化实验室常用的内部质量控制方法

Commonly used internal quality control methods for sanitary test physical-chemical laboratories

内部质量控制方法是通过应用数理统计技术对实验室的检测进行过程控制,并排除检测环节中所有导致不合格不满意的因素。常采用以下方法:有证标准物质核查;回收率的测定;用不同的方法或相同方法不同人员进行重复检验;平行样的测定;空白试验;保留样品再检测;质量控制图分析;检测结果和检测指标的相关性等,从而达到保证检测数据的准确性。

In order to guarantee the accuracy of test results in physical chemical laboratories, internal quality control methods combined with mathematical statistics technology are used to control the test process, and exclude factors resulting in unqualified results. The commonly used methods are described, including certi- fied standard material check, recovery measurement, repeatability test with different methods or with same method but different persons, parallel analysis, blank test, preservation sample test, quality control chart analysis, correlation analysis of test results and test parameters, etc.