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  • Title: Quality assurance in the determination of metals in clinical chemistry and toxicology: the METOS project. Metalli Tossici.
    Author: Patriarca M, Menditto A, Morisi G.
    Journal: Ann Ist Super Sanita; 1995; 31(1):141-8. PubMed ID: 8546362.
    Abstract:
    National external quality assessment schemes (EQAS) for the determination of trace elements in blood (Al, Cd, Cu, Pb, Zn) have been promoted in Italy since 1983. They were organized by a working group of the Istituto Superiore di Sanità and known as "METOS (Metalli Tossici, toxic metals) project". The organization of the schemes included the preparation of suitable control materials by the promoting centre and the elaboration of valuable strategies of sample distribution, treatment of data and evaluation of results, that could be applied even to a small number of participants. The procedures used and the results obtained in ten years of activity of the METOS project are reported. Within the framework of the programme some information has been obtained, confirming the validity of the procedures used for sample preparation, sample distribution and evaluation of laboratories performance.
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