Accu-Chek Active BS Control Solution 4 mL 2's

Accu-chek Active Control Solution is used to test the accuracy of your meter and test strips. Applied to a test strip, control solution confirms that the meter's test results are in the expected range printed on the test strip vial. Control solution tests should be performed at least once a week, every time a new vial of test strips is opened, and whenever you suspect the meter or test strips may not be functioning properly.