Pharmaceutical testing laboratories operate under strict regulatory compliance and make important contributions to assuring quality of medicines provided. The testing is undertaken in a proper way and the results generated by them are accurate, reliable and reproducible. Adoption of ISO 17025 standard, which serves as a basis for laboratory accreditation, by the pharmaceutical laboratories would help to achieve these goals. Present article describes the various approaches which may be adopted by the pharmaceutical laboratories for assuring the quality of their test results. These approaches include: use of certified reference material and internal quality control, participation in inter-laboratory comparison and proficiency testing programs, replicate testing using the same or different methods, retesting of retained items and internal quality controls.
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