If you often experience stomach upset, it may be a signal that something is not right with your intestinal health. Many stomach problems can be traced to imbalances in the intestinal flora, where important bacteria are either missing or in too low levels. By performing a stomach and intestinal test, you get a detailed picture of your intestinal flora and how well it works. Such a test can reveal whether you have a lack of good bacteria or a high concentration of bad bacteria. Using the test results, you can take steps to restore balance in your gut and relieve symptoms such as bloating, diarrhea or constipation.