Test strips are used in conjunction with a blood glucose meter to monitor blood glucose levels CONTOUR NEXT Strips use new innovative technology to evaluate a single sample 7 times for exceptionally accurate results Features: No CodingTM Technology eliminates errors due to user miscoding Sip-In® Sampling helps you get the right amount of blood on your first try Second-ChanceTM Sampling allows you to apply more blood to help prevent wasting a test strip.No calibration required. Pack size: 50 strips per box