The Forensic Laboratories in the Republic of Croatia working on the judiciary for accreditation are aligned with the international standard ISO / IEC 17025: 2005, which was mandated by the International Organization for Standardization (ISO) in cooperation with the International Electro technical Commission (IEC). The recommendation for clinical forensic laboratories is compliance with the ISO / IEC 17020 standard. There are international guidelines for standardization of court attorney's autopsy in many countries. Accreditation is provided by the Certificate which is the official certificate of competence for carrying out activities, recognition of impartiality, credibility and professionalism. The accredited laboratory implements and maintains an appropriate management system in accordance with the norms it harmonizes, thereby raising the level of organizational and technical competence. Although accreditation is in compliance with ISO / IEC 17025 voluntary business decision-making today, the need for accredited laboratories is getting bigger and getting authority from some state accreditation bodies is considered an obligation. By acquiring a certification by accreditation, the lab proves the reliability of its analysis, quality of service, professionalism, technical accuracy of laboratory equipment and equipment and guarantees quality control under the supervision of competent organizations in accordance with internationally accepted criteria. The HRISO / IEC 17025 certificate issued by the Croatian Accreditation Agency for Forensic Laboratory in the Republic of Croatia means increasing the confidence of users of laboratory services, increasing market competitiveness and facilitating access to new markets. Obtaining accreditation is a complex process that implies certain costs and the maintenance of a permanent investment accreditation, and the cost or need for accreditation needs to be well assessed.