Store the test strips in a cool, dry place between 5C and 30C. Always ensure that the meter and test strips are at the same temperature before testing. Do not open the OneTouch Ultra Test Strips 25 vial until you're ready to perform a test. After use, close the cap on the vial tightly to avoid contamination and damage. Only store unused test strips in their original vial. Test strips should not be reused if blood, control solution, or any contaminants have come into contact with them. With clean, dry hands, you can touch the test strip anywhere on its surface. However, do not bend, cut, or modify it in any way. When you first open a vial of test strips, record the discard date on the label.