Alere/HemoSense, Inc. 100260 INRatio Power Supply. On board quality controls. High and low control tests are performed in real time, side by side with the PT test, using the same drop of blood, ensuring the reliability of each and every test. No additional costly, time consuming external control tests or materials are recommended. Easy to use simple fingerstick test procedure. Self-maintaining system requires only routine cleaning, 3-button interface to change time, date, and access test memory. Unlike some other systems, use any lancet device to collect blood, and apply the one drop sample directly onto a test strip. Rapid test results in less than 2 minutes. Consistent, reliable results comparable to a central laboratory. Stores up to 60 results in memory. Powered by AC adapter or 4 AA batteries. Built in communication port for a printer.