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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; however, exams requiring premedication should be scheduled at a hospital.

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 2 hours 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 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, and any of the following criteria apply, you must have a current creatinine level drawn within the last 30 days. If you do not have a current creatinine level, the technologist will draw blood the day of the exam:

  • 60 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
After your examination, a radiologist will interpret your exam and provide a written report to your physician. Your physician will then contact you with the results.