Accu-Chek Glucose Guide Control Solution

From the manufacturer's website:  Accu-Chek control solutions are specifically designed to work with your meter and test strips to confirm the accuracy of your results. The control solution contains a known amount of glucose. Simply use it instead of blood on a test strip. If the result matches the expected glucose level, your meter and test strips are working properly. Perform a test with Accu-Chek Guide glucose control solution to ensure accuracy any time: A new test strip box is opened The test strip container has been left open for an extended period of time Your test strips may have been damaged You want to ensure the meter and test strips are accurate Your test strips were stored in extreme temperatures, humidity or both You drop your meter Your current test result does not match how you feel You want to make sure you are performing tests correctly Warning: For in vitro diagnostic use. Before using this product, read the package insert carefully. Store between 39°F-86°F.