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| Lower GI Series What is a lower GI series? A GI or gastrointestinal series is an X-ray exam of the large intestine (colon). The test is used to determine abnormalities in the lower gastrointestinal tract, such as tumours or obstructions. Preparation It is important that you don't eat or drink anything from midnight the night before your exam. It's also a good idea not to eat any fruit, nuts, peas, beans, coarse cereals or fried foods two days before the exam. On the day before your test, your diet should be clear liquids only, such as clear broth, apple or cranberry juice. On the day of the exam, you will be asked to put on a hospital gown and remove anything metal that you may have on. What should I expect during the exam? A radiologist and a technologist will administer a barium enema. The barium fills the large intestine so that it can be seen on X-ray. During the exam you will be asked to change your position or hold your breath for a few seconds. You may experience mild to moderate discomfort. At times you may experience cramping. What should I do after the exam? You may eat after the exam is over. It's important to drink plenty of fluids to avoid constipation from the barium. Note: your bowel movement may be tinged white for a few days. Tips for your exam
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