The SD Codefree Blood Glucose Monitoring System is an in vitro diagnostic medical device for self-testing. it is a compact, hand-held, and easy-to-read monitor that stores up to 500 test results. It provides an accurate picture of your blood glucose level at the time of the test from a small droplet of blood. Use the included lancing device to quickly prick your finger and add a drop of blood onto the test strip. Then the SD CodeFree meter will automatically give a result.