NATA

NATA's accreditation is based on a peer-review process made possible by some 3000 volunteer experts who assist with the assessment of facilities and sit on NATA's various technical committees. To maintain accreditation, facilities must be re-assessed regularly.

The criteria for determining a facility's competence are based on the relevant international standard (eg ISO/IEC 17025, ISO 15189, ISO/IEC 17020) and include: the qualifications, training and experience of staff; correct equipment that is properly calibrated and maintained; adequate quality assurance procedures; appropriate sampling practices, and so on.