What is the purpose of using control samples in lab testing?

Control samples play a critical role in laboratory testing as they are essential for ensuring tests yield valid results. By using control samples, analysts can compare their test results against known values. This comparison helps to identify any inconsistencies, errors, or deviations that may occur during the testing process.

When control samples are included in an experiment, any observed discrepancies can indicate potential issues with the testing methods or equipment, prompting further investigation. This process enhances the reliability and accuracy of the testing outcomes, leading to more trustworthy data that can inform decisions.

In contrast, while calibrating measuring equipment is important, it is a separate process that does not directly relate to the concept of validating test results. Similarly, producing additional waste is an unintended consequence of the testing process and not a goal, and training new lab analysts, while vital for laboratory operations, is not the function of control samples in testing procedures.