Blood Test
Another technique to diagnose irritable bowel syndrome is the blood test. However, this will only be used when you meet the Rome criteria. The main purpose is to rule out some possible infections or diseases that would be related to irritable bowel syndrome. These include celiac disease, small intestinal bacterial overgrowth, or lactose intolerance. The procedure is quick and simple. A blood sample will be taken from your body and sent to the laboratory for examination. [4]
