Accu-Chek Aviva control solution 2 x 2.

Accu-Chek control solutions are specifically designed for use 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 control solution any time you open a box of test strips, the test strip container has been left open, you think the test strips may be damaged, you want to check the meter and test strips, the test strips are damaged, the meter is not working properly or the test strips are damaged.test strips, the test strips have been stored in extreme temperatures, high humidity or both, you have dropped the meter, your test result does not match how you feel or you want to check that you are testing correctly.