NABL – National Accreditation Board for Laboratory

NABL has established its Accreditation System in accordance with ISO/IEC 17011:2004, which is followed internationally. In addition NABL has to also comply with the requirements of APLAC MR001, which requires the applicant and the accredited laboratories to take part in recognized Proficiency Testing Programs in accordance with ISO/IEC Guide 43. An applicant laboratory has to satisfactorily participate in at least one Proficiency Testing program, while the accredited laboratories are expected to cover the major scopes of accreditation in a cycle time of four years. Towards this objective, NABL has been conducting Proficiency Testing with the help of selected accredited laboratories as nodal laboratories in different fields. The performance remains confidential between NABL and each participating laboratory by using laboratory code numbers. In case of unsatisfactory performance, laboratory is expected to investigate and take the necessary corrective actions. In case of repeated failure or gross failure indicated by Z factor, En ratio etc. scope of accreditation is reduced by NABL.