The Center for Digestive Medicine provides a full range of diagnostic tests to inpatients and outpatients of all ages who are experiencing gastrointestinal disease:

• Endoscopy -- A small, flexible tube (endoscope) produces video images of the upper and lower intestinal tract and the upper bile-producing system (Endoscopes sometimes are used to repair or remove tissue.) 
• An upper GI series is an x-ray exam of your upper digestive tract (the area from your mouth to the start of your small intestine). This test helps your doctor find problems such as ulcers, tumors, and certain diseases.
• Lower GI endoscopy allows your doctor to view your lower gastrointestinal (GI) tract. Your entire colon and rectum can be examined (colonoscopy). Or just the rectum and sigmoid colon can be examined (sigmoidoscopy).                
• Colonoscopy is used to view the inside of your lower digestive tract (colon and rectum). It can help screen for colon cancer and can also help find the source of abdominal pain, bleeding, and changes in bowel habits.
• Sigmoidoscopy is a procedure used to view the lower colon. This test screens for colon cancer and can also help find the source of abdominal pain, bleeding, and changes in bowel habits. 
  
• 24-hour Ambulatory pH Monitoring -- Outpatient procedure to measure the level of acidity in the esophagus 
• Esophageal Manometry -- Recording muscle pressures along a thin tube inserted into the esophagus to evaluate its function.