There isn't one test that can tell you whether or not you have Crohn's disease. And Crohn's disease has many possible symptoms that are the same as symptoms for other health problems. So, to make a diagnosis of Crohn's disease, your doctor is likely to gather information from multiple sources. You'll probably go through a combination of exams, lab tests, and imaging studies with these goals in mind:

• rule out other health problems that have similar symptoms
• make a clear diagnosis of Crohn's disease
• determine exactly which part of the digestive tract is affected