Which element constitutes a compliant QA/QC program?

Which element constitutes a compliant QA/QC program?

• A. Documented SOPs, routine internal QC, external proficiency testing, calibration/verification schedules, incident reporting, and corrective actions.
• B. Ad hoc testing without documentation.
• C. Only external proficiency testing, with no internal QC.
• D. No incident reporting.

Answer: (A)

A compliant QA/QC program depends on a full set of documented procedures and ongoing quality controls. Having documented SOPs ensures everyone follows the same methods and that there is a retraceable record of how tests are performed. Routine internal QC checks keep daily operations aligned with expected performance, catching drift or random errors in real time. External proficiency testing provides an independent benchmark against peer laboratories, confirming that methods produce accuracy across different settings. Regular calibration or verification of instruments keeps measurements valid and traceable over time. Incident reporting creates a formal record of problems, and corrective actions address root causes to prevent recurrence, feeding back into process improvements. Together, these elements form a complete, auditable quality framework that supports reliable, defensible results.

Without documentation, there’s no reproducibility or accountability. Without internal QC, issues can go unnoticed between calibrations. Relying solely on external proficiency testing ignores ongoing performance and instrument reliability. And without incident reporting, there’s no mechanism to investigate problems and prevent future errors.