Proficiency Testing as a Tool for Confirming the Validation / Verification of Measurement Methods

A number of generally accepted approaches and algorithms used by laboratories to improve, maintain and demonstrate the reliability and quality assurance of measurement results are considered. Using the example of the procedure for external quality control of laboratory results in the form of participation in proficiency testing programs or interlaboratory experiments, an approach is demonstrated that fully ensures the reliability of results, including when implementing a method (technique). The most complete analysis of reports on the results of participation in proficiency testing programs or interlaboratory comparisons allows one to evaluate the effectiveness of the laboratory.