Prep Instructions for CT

Your exam may require both oral and intravenous contrast materials. If you have a history of iodine or contrast allergy, your referring physician should provide you with medication to take prior to your appointment.

If you are having an abdominal exam, avoid food and drink for 4 hours prior to your procedure. Necessary medications may be taken as prescribed with as little water as possible. If your exam requires oral contrast, please plan to arrive 90 minutes prior to your scheduled appointment. During this time a technologist will explain the entire examination process and answer any questions you may have.

If you are diabetic and taking Glucophage, please follow these instructions:

• Take Glucophage on the day of the procedure
• Do not take Glucophage for two days after the procedure

If you are having a CT with contrast, you must have a current creatinine level drawn within the last 30 days or at least 24 hours before your exam if any of the following criteria apply:

• 70 years of age or older
• Hypertension
• Diabetes
• Renal disease or renal problems
• Family history of renal failure
• Patient currently on dialysis or a history of being on dialysis