There aren’t specific laboratory tests that can confirm or exclude Crohn’s disease. Crohn’s disease can be confirmed or excluded only via endoscopy (a capsule endo) combined with a biopsy and patho-histological interpretation. HIDA-scans are used for evaluation of the gallbladder function. Billiary dyskinesia, for example, is diagnosed with HIDA. If everything comes out normal and no structural damages are found, then the remaining diagnostic possibility is irritable bowel syndrome (IBS). IBS is functional disorder of the intestines without structural damage present.

I had a colonoscopy this monday- They said i had Colitis, probably proctitis. Wednesday night after a few days of taking asacol a few hours later i had watery diarrhea, chills, and a fever. Im wondering if i had the flu? the next day i felt fine. i called my GI and he doesnt understand that I never had issues with diarrah in the past, and says i need to continue on the Asacol. Im nervous because if im allergic i dont want to have the same reaction. What should i do?