What is the purpose of a control sample in laboratory testing?

The purpose of a control sample in laboratory testing is to verify the performance of the test method. Control samples are essential for ensuring that the laboratory tests are working correctly and consistently. They contain known quantities of analytes, and their results help to determine whether the test methods are producing reliable data.

By regularly running control samples alongside patient samples, laboratory professionals can monitor the accuracy and precision of the tests being conducted. If the results of the control sample fall within the expected range, it indicates that the test is functioning properly. Any deviations from expected results can signal potential issues that might necessitate recalibration or troubleshooting of the testing process.

This verification process helps to maintain the integrity of laboratory testing, ensuring that patients receive accurate and trustworthy test results that inform their healthcare decisions.