ABSTRACT
The aims of this article is to provide the quality control requirements of preanalytical variation for the determination of trace element aluminum,arsenic,chromium,cadmium and mercury in samples of human origin,reduce the influence of preanalytical variation on the test results.Refer to the Clinical and Laboratory Standards Institute (CLSI) documents,Control of Preanalytical Variation in Trace Element Determinations and other references and guidelines,the methods of quality control of aluminum,arsenic,chromium,cadmium and mercury determination have been made,including:the factors needed to be considered in collection,preservation,transportation and other preanalytical factors,the abilities and considerations of laboratory staff,etc.Hope this article provide some useful suggestions and help to the laboratories of determination of aluminum,arsenic,chromium,cadmium and mercury in samples of human origin.