For the determination of blood glucose , suitable for self-testing HOW TO USE : Use the finger strips to obtain a drop of blood. Insert a test strip into the meter. Symbols of a test strip and a flashing blood drop will appear on the display. Touch the drop of blood to the tip of the yellow end of the test strip. A flashing hourglass symbol and a beep will indicate that enough blood has been applied, and the result will appear on the display.