Up to 500 subjects undergoing standard endoscopy / pouchoscopy, or having ileostomy or colostomy bags or having an ileal pouch and who meet the eligibility criteria will be enrolled to this study during up to three years at up to 4 clinical sites. GI fluids samples will be collected from: (i) fluids suctioned during standard endoscopy procedures / pouchoscopy, (ii) from ileostomy/colostomy bags removed for bag replacement and (iii) from stool samples collected by patients after pouchsurgery.~The samples will be collected into sealed plastic containers, clearly labeled with Biohazard stickers and patient's code and be kept on ice for up to 30min and then freezed in -20deg to -80deg.~Characterization and quanification of small molecules- and protein biomarkers of GI diseases such as IBD will be performed.
Up to 500 subjects undergoing standard endoscopy / pouchoscopy, or having ileostomy or colostomy bags or having an ileal pouch and who meet the eligibility criteria will be enrolled to this study during up to three years at up to 4 clinical sites. GI fluids samples will be collected from: (i) fluids suctioned during standard endoscopy procedures / pouchoscopy, (ii) from ileostomy/colostomy bags removed for bag replacement and (iii) from stool samples collected by patients after pouch surgery.