Often digestive disorders can be diagnosed with a physical exam and a careful history. Sometimes, diagnostic tests must be performed to rule out other diseases. While GI tests aren’t enjoyable, they aren’t usually painful, either. For many tests, some preparation will need to be done beforehand. Carefully preparing for a test makes it easier and more effective. Plus, once you know what to expect, you will feel more comfortable and know you are doing everything you can to maintain good digestive health.