National Accreditation Board for Testing and Calibration Laboratories (NABL), is an autonomous body under the aegis of Department of Science & Technology, Government of India, and is registered under the Societies Act.

The concept of Laboratory Accreditation was developed to provide a means for third-party certification of the competence of laboratories to perform specific type(s) of testing and calibration.

Laboratory Accreditation provides formal recognition of competent laboratories, thus providing a ready means for customers to find reliable testing and calibration services in order to meet their demands.