Ascensia Contour Test Strips are for testing blood glucose. For use with Ascensia Contour Blood Glucose Meter. The Contour System needs only a very small drop of blood to give accurate results (0.6 microliters). Patented bottle design with built-in desiccant: Keeps strips fresh up to 6 months after opening. Easy viewing of sample fill. The window makes it easy to see when the strip fills with blood using Sip-in Sampling technology.