• Stool analysis. In some cases, your Doctor may request a stool sample, to be analyzed for the presence of hidden (occult) blood.
• Barium enema. In this test, the lining of your bowel is coated with a contrast dye (barium) so that your Rectum, colon and sometimes a part of the small intestine can be clearly seen on an X-ray.
• Sigmoidoscopy. In this procedure, your Doctor uses a lighted, flexible tube to examine your sigmoid colon and Rectum.
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Colonoscopy. This diagnostic procedure allows your Doctor to examine the entire colon with a flexible, camera-equipped tube.
• Anorectal manometry. In this procedure, your Doctor inserts a narrow, flexible tube into your Anus and Rectum and then inflates a small balloon at the tip of the tube. This allows your Doctor to measure the coordination of the muscles you use to move your bowel. You may undergo this test if your Doctor suspects pelvic floor dysfunction.