Hi bluebirdkjt...I'm afraid that I'm also unfamiliar w/ the test that you mentioned. I did notice, however, that the drugs you are taking (Pentasa, previously Asacol) are generally prescribed to people w/ Ulcerative Colitis vs. Crohn's. Bloody diarrhea is also more of a symptom of UC. Often, doctors have trouble differentiating between the 2 diseases, in the beginning. At the very least, I would think that your doctors would advise you to have an appendectomy (assuming that you haven't already) in order to rule out appendicitis & to allow them to view the ileum. Generally, anyone w/ Crohn's or Colitis eventually has their appendix removed to avoid misdiagnosing abdomenal pain as strictly IBD (Inflammatory Bowel Disease). Meanwhile, make sure that you're seeing a top GI (for my ileostomy, I was referred by my GI to one who has dealt w/ more advanced cases). Lastly, there are numerous tests that are used to diagnose IBD...25+ yrs. ago I had both upper & lower GI's, ultrasound, CAT-Scans, different scopes including colonoscopy, blood work & probably a few others. Today, it seems that most people are more readily diagnosed & fortunately, the doctors usually go straight to the colonoscopy & then move backward. Hopefully, you will get a definitive diagnosis within a short time; otherwise, I would seek a 2nd opinion. Good luck & keep us posted!