Performing a glucose control test is an excellent way to check that your system (meter and strips) are working optimally to deliver accurate and precise results. Using manufacturer's control solution to test the system, the results will provide information to determine if the system passes or fails the test. If the system fails the test, further information needs to be obtained to troubleshoot the system. How do I interpret the results of the control solution test? The control ranges are located on the vial of test strips that you are using