All the meters of the ACC-CHEK Active family use the ACC-CHEK Active test strips which are part of a system designed for people who want a proven system that is fast and simple The large touchable test strips require a small blood sample of 1-2 micro liters To help ensure accurate results the meter checks the expiration date of the strip via the code chip and alerts you when the test strips are already expired The system indicates if more blood is needed With the ACC-CHEK Active test strip in-meter re-dosing is possible within 5 seconds You can apply blood to the test strip in or out of the meter The visual double-check option gives you a back-up on your blood glucose values Just compare the color in the test strip control window with the colors on the vial Advice: When you take a test strip from the vial make sure you close it immediately afterwards to preserve strip quality