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National External Quality Assurance Scheme


To ensure the accuracy and quality of test results issued by DOH-accredited laboratories, NRLs are mandated to conduct Quality Assurance Program through the Proficiency Testing (PT) Program. Participation is required by the BHFS–DOH for purposes of renewal of accreditation and continuous maintenance of the accreditation. All accredited laboratories applying for renewal of accreditation must participate and pass satisfactorily.