Continued Certification
To maintain certification by the Department a laboratory shall:
- Notify the Department in writing within 30 days of any changes to the
following:
- The name and street address (not P.O. Box) of the Laboratory;
- The name of the Laboratory Director/Manager;
- The name of the Laboratory Quality Assurance Officer;
- Test methods used for certification purposes;
- Quality Assurance Plan; or
- Standard Operating Procedures; and
- Document that the Laboratory has successfully analyzed a proficiency
testing (PT) sample annually for each test method certification is requested. PT
samples must be purchased from a National Institute of Standards and Technology approved
PT provider. If the results of a PT sample is unacceptable, the laboratory should
submit corrective action taken to ensure accuracy of future results. At least one PT
per year must be acceptable for each test method and analyte in which certification is
requested.
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