My child is 8 years old. She has suffered chronic constipation for the last few years. She has terrible tummy pains often. She has been rapidly gaining weight for the last year or so. She gets a great deal of exercise and eats healthy. She drinks mostly water with an occasional sprite or lemonade. She has been tested for celiac disease and thyroid disease which both came back good. We recently found out her CRP was elevated. A repeat was done and it is still elevated. They want to do a fecal calprotectin test which tests for ulcerative colitis and crohns disease. I m confused as to why they are doing this as she is always constipated and is not losing weight. I have a relative who was diagnosed with crohns disease as a child and their symptoms are far from similar. Can you explain any other reason for this test?tam