What is the primary purpose of quality control in laboratory testing?

The primary purpose of quality control in laboratory testing is to ensure the accuracy and reliability of test results. Quality control procedures are essential to verify that the testing methods used are functioning correctly and that the results produced are valid. This involves the use of control samples, regular calibration of equipment, and adherence to standardized protocols.

When laboratories implement quality control measures, they are not only checking the correctness of individual test results but also ensuring that testing processes remain consistent over time. This helps to detect any deviations from expected performance, which can prompt corrective actions before erroneous results impact patient care or further diagnostic decisions.

While improving laboratory efficiency, reducing costs, and increasing the volume of tests are valuable goals for laboratories, they are secondary to the critical need for accurate and reliable test results. Without this accuracy, the value of efficiency and cost savings diminishes significantly, as incorrect results could lead to misdiagnosis and inappropriate treatment, negatively affecting patient outcomes. Thus, the focus on maintaining quality control is foundational to laboratory operations and patient safety.