What is the primary purpose of running control tests in laboratory settings?

What is the primary purpose of running control tests in laboratory settings?

• A. To ensure the accuracy of the test being administered
• B. To save costs on reagents
• C. To speed up testing
• D. To train new staff

Answer: (A)

Control tests are used to verify that the test system is functioning correctly and producing reliable results. By running controls—samples with known, expected outcomes—the lab checks that reagents are active, instruments are calibrated, and the testing process stays within defined limits. This helps detect issues such as degraded reagents, instrument drift, or procedural mistakes that could bias patient results. If controls fall outside the acceptable range, the run is considered invalid and must be repeated after troubleshooting, ensuring that reported patient results are accurate and trustworthy. While controls add steps and cost and may slow throughput, those factors are not the primary purpose; the main goal is the accuracy and validity of the test outcomes.

Control tests are used to verify that the test system is functioning correctly and producing reliable results. By running controls—samples with known, expected outcomes—the lab checks that reagents are active, instruments are calibrated, and the testing process stays within defined limits. This helps detect issues such as degraded reagents, instrument drift, or procedural mistakes that could bias patient results. If controls fall outside the acceptable range, the run is considered invalid and must be repeated after troubleshooting, ensuring that reported patient results are accurate and trustworthy. While controls add steps and cost and may slow throughput, those factors are not the primary purpose; the main goal is the accuracy and validity of the test outcomes.