The following quality control tests can assure you that your meter is working properly:
Test using a control solution: follow your normal blood-testing procedure, but use a liquid control solution instead of blood. Use these control solutions every time you use a new bottle of test strips or if you drop your glucometer or whenever you get unusual results. These solutions usually come with your monitor and are available at most drugstores and pharmacies. Follow package directions.
Match your reading with lab results: take the blood glucose monitor along when you visit your doctor or have an appointment for lab work. Check your blood sugar level with your meter at the same time that blood is drawn for lab tests. Then compare your meter’s reading with the lab results. Results that are within 15 percent of the lab reading are considered accurate.
If your meter isn’t working properly, contact the manufacturer of your meter and test strips.