Ensure the accuracy of your blood sugar readings with Leader™ Glucose Control Solution. This Level 1 (LE1) solution is a professional-grade liquid containing a known amount of glucose. It is used to perform a quality control check on your Leader brand glucose meter and test strips. By running a control test, you can verify that your device is calibrated correctly and that your strips haven't been compromised by heat or humidity. Using this solution is highly recommended when opening a new vial of strips, after dropping your meter, or whenever you suspect your results are inconsistent.