Group of Companies KDL specialize on medical laboratory diagnostics due to modern international quality standards. We open access to high-quality service, objective and trustworthy information in the field of medical laboratory diagnostics for professionals of public health services and the population. Medical laboratory researches are one of the basic tools for statement of the diagnosis and give to the doctor about 70 % of the significant information. Principles of objectivity and reliability of results of laboratory researches have been put at the heart of Group of Companies KDL creation as we specialize only on laboratory diagnostics. Successful experience in various federal districts allows us to feel confident about the future and to build the further plans for development and expansions of a network of medical laboratories KDL in Russia.