Regulations On Proficiency Testing For Testing Laboratories That Using AOSC Accreditation Services

Regulations On Proficiency Testing For Testing Laboratories That Using AOSC Accreditation Services
       With reference to documents such as ILAC-P9 ILAC Policy for Participation in Proficiency Testing Activities, EA-4/18:2010 Guidance on the level and frequency of proficiency testing participation, APLAC PT006 Proficiency Testing Frequency Benchmarks, ISO/IEC 17025:2005, ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration Laboratories, ISO/IEC 17043:2010 Conformity assessment - General requirements for proficiency testing, AOSC issued the Regulations on proficiency testing for testing laboratories (GR-15). Accordingly, laboratories that using AOSC accreditation services shall follow and meet the requirements in this regulation.
 
      According to ISO/IEC 17025:2017, interlaboratory comparison is the organization, performance and evaluation of measurements or tests on the same or similar items by two or more laboratories in accordance with predetermined conditions. Intralaboratory comparison is the organization, performance and evaluation of measurements or tests on the same or similar items, within the same laboratory in accordance with predetermined conditions. Proficiency testing is an evaluation of participant performance against pre-established criteria by means of interlaboratory comparisons.
    According to GR-15, prior to accreditation, the laboratories that are accredited by the AOSC shall participate in proficiency testing/interlaboratory comparison provided by competent organizations. AOSC accepts proficiency testing/interlaboratory comparison programs from the following organizations (refer to the official AOSC website for more information):
           - Programs by organizations that are ISO/IEC 17043 accredited or accredited by equivalent standard;
           - Organizations that are accepted by AOSC and public on the official website.
       Laboratories shall not use subcontractor or external laboratory when testing sample for proficiency testing/interlaboratory comparison.
 
       Requirement for laboratories before registering for AOSC accreditation
    Laboratories registering for AOSC accreditation shall demonstrate that they have successfully participated in at least 1 PT program or interlaboratory comparison (if they can prove that there is no appropriate PT program) respectively for each field before registering for accreditation. Depending on specific cases, AOSC can accept the evidence showing the participation in PT for the purpose of initial accreditation. The result of PT participation shall be sent to AOSC as evidence for assessment. If the results of PT program participation are ineligible, AOSC has the right to refuse to accredit a part of or the entire ineligible tests of that laboratory. In case the laboratory can prove that there is no appropriate PT program or cannot organize an interlaboratory comparison, the laboratory shall have evidence to prove that they have taken measures to ensure the validity of internal testing results in accordance with a predetermined procedure on the method and interval. Records of this activities can be requested by AOSC to review before the assessment.
 
     Requirement for maintaining the participation of proficiency testing/interlaboratory comparison within the accreditation cycle of AOSC
     During the accreditation cycle, all laboratories shall maintain the validity of results through:
   Participation in proficiency testing provided by organizations that are accepted by AOSC with the following rule:
          - At least once a year per a sub-field that is accredited;
     - Ensure that all accredited sub-field are participated in proficiency testing program within the accreditation cycle.
    If the laboratories can prove that there is no appropriate PT program, the laboratories shall perform interlaboratory comparison with other laboratories that are accredited by AOSC or by accreditation bodies within the international mutual recognition. The same rule for proficiency testing shall be applied to interlaboratory comparison.
    Interlaboratory comparison shall be organized in conformity with the requirement of ISO/IEC 17043. AOSC assessors shall make decision to accept whether the interlaboratory comparison can replace PT program in accordance with AOSC policy. The assessor will assess the organization of interlaboratory comparison, the conformity of sample, data analysis criteria and corrective actions when there are uncertain or ineligible result.
     If the laboratories can prove that there is no appropriate PT program and no appropriate laboratory to perform interlaboratory comparison, the laboratories shall perform intra-laboratory comparison (if the number of personnel allows) or taking measures to ensure the validity of internal testing results in accordance with a predetermined procedure on the method and interval. Records of this activities (including the records of sample preparation) shall be kept as evidence.
    When there is nonconformity in the results of PT / interlaboratory comparison in accordance with the regulation of the PT organization or the laboratories, the laboratories shall perform actions to resolve without delay. AOSC could review the records of these actions at any time during the accreditation cycle.
If the laboratories do not take any corrective action or AOSC finds that the corrective actions are not sufficiently effective to the nonconformity, AOSC could:
           - Request to participate in other PT / interlaboratory comparison program;
           - Conduct another assessment or a part of an assessment for the laboratory;
           - Suspend or withdraw accreditation for a part of or the entire scope.
 
       Please refer to GR-15 in VLAT Document on AOSC website for more information.
 

Source: AOSC

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