This information is approved and/or reviewed by U-M Health System providers but it is not a tool for self-diagnosis or a substitute for medical treatment. You should speak to your physician or make an appointment to be seen if you have questions or concerns about this information or your medical condition.| Complete disclaimer

Instructions for Patients with Diabetes Having Outpatient Procedures/Tests

Patients who manage their diabetes with pills alone (no insulin.)
For patients with diabetes, any test or procedure that causes you to miss a meal or change your usual meal plan will require special planning to safely manage your blood sugar. Because the timing of your meals and medicines is different than usual, your blood sugar level is also likely to be different than usual and you will want to watch it closely. You should test your blood sugar at dinner and bedtime the night before the procedure and first thing in the morning of the procedure. You should continue to check your blood sugars every 1 – 2 hours up to and right after your procedure has ended. Also, check your blood sugars whenever you feel that you might be experiencing low blood sugars or very high blood sugars. We want you to bring your blood glucose monitor and blood glucose strips with you to the procedure. Be sure to tell the nurse, doctor or technician if you think you are having a low blood sugar reaction during the procedure. We also want you to bring a source of sugar, should it be needed: (glucose tablets, glucose gel, sugar packets) can all be used to treat a low blood sugar, should this happen.

NOTE: if you take any Metformin containing pills (Glucophage, Glucovance, etc.) to control your blood sugar: For procedures that inject dye (CT scans, IVP, some Angio procedures), you will need to be off of your Metformin containing pills the entire day of the test and for two days after the test. A blood test for kidney function will need to be done before you restart these pills. Please speak to your doctor or nurse about this.

Information provided by Lisa Sylvest, RN, BSN, UMHS GI Clinic, April 2008