Canada Medical Lab Certification Full Practice Exam 2025

Controls are essential elements in laboratory testing because they provide a benchmark for evaluating the accuracy and reliability of test results. By using controls, which are known samples with established values, laboratory personnel can assess the performance of the test system and identify potential errors in test results.

When a test is performed, the results of the controls are compared to expected values or ranges. This comparison allows technicians to determine whether the test is functioning properly. If the control results fall outside the expected range, it signals that there may be an issue with the testing process, such as reagent problems, equipment malfunction, or operator error. This built-in error detection mechanism is crucial for ensuring the validity of test results, which can ultimately affect patient diagnosis and treatment.

In contrast, disregarding controls ignores an important aspect of quality assurance, and mandates do not typically pertain to the specific function of controls in assisting with test validation. While there are costs associated with testing, these should be seen as an investment in quality rather than a drawback, as the use of controls significantly enhances the reliability of laboratory diagnostics.