Yes, Accu-Chek Instant Test Strips can be used with the Accu-Chek Instant S Blood Glucose Monitor System. These test strips are specifically designed to be compatible with the Accu-Chek Instant S meter, providing accurate blood glucose readings when used correctly. Make sure you use only Accu-Chek Instant Test Strips with this meter, as other Accu-Chek strip types may not be compatible. Always check that the test strips are within their expiry date and have been stored properly in their original container with the lid tightly closed. Use a new test strip for each blood glucose test and follow the instructions provided with the meter. Using the correct strips helps ensure reliable results for monitoring your blood glucose levels. If you are unsure about compatibility or receive unexpected readings, consult your doctor, pharmacist, or diabetes care team.