Abstract
The article highlights the main stages of the procedure for accreditation of a testing laboratory on the basis of the Department of Transport and Engineering of the M. Kozybaev NKU. Preparation of the testing laboratory for the accreditation procedure implies the performance of a number of mandatory works aimed at achieving the compliance of the testing laboratory with the established accreditation criteria in accordance with regulatory documents. Prospective methods of development and improvement of the system of accreditation of the testing laboratory (TL) are substantiated. The choice of approaches and scientific methods for studying the problem in the preparation of documents for accreditation of testing laboratories was made. An in-depth analysis of the procedure and rules for accreditation of testing laboratories was carried out.