<prompt> Answer this question truthfullyWhat other diagnostic tests are available for Crohns disease?  <response>: <reason> The diagnosis of Crohns disease can sometimes be challenging, and a number of tests are often required to assist the physician in making the diagnosis. Sometimes even with all the tests the Crohns does not show itself. A colonoscopy has about a 70 chance of showing the disease and the rest of the tests go down in percentage. Disease in the small bowel can not be seen through some of the regular tests; for example, a colonoscopy cant get there. 