Which of the following represents a cornerstone of quality within an accredited laboratory?

The cornerstone of quality within an accredited laboratory is the certification of personnel. This emphasizes the importance of having qualified and trained individuals who possess the necessary skills and knowledge to perform laboratory procedures accurately and consistently. Certification ensures that the personnel meet the standards necessary for the reliable operation of laboratory practices, adhering to quality assurance protocols and regulations.

When personnel are properly certified, they are equipped to make sound decisions, interpret results correctly, and maintain the integrity of laboratory processes, which is crucial for delivering accurate and trustworthy results. This foundational aspect of quality assurance underlines the laboratory's commitment to maintaining high standards in all operations, which is vital for both compliance and the safety of data generated.

In contrast to certification of personnel, approval by local government focuses more on regulatory compliance rather than the direct quality of laboratory work. While electronic record keeping and the use of automatic machines can enhance efficiency and accuracy, these elements depend on the skilled operation of qualified personnel. Thus, they do not fundamentally establish the quality standards required in the laboratory setting.