There are not any lab tests that tell us for sure that your child’s body is rejecting the transplanted intestine. Detecting rejection is based on symptoms. Rejection can occur without you or your child noticing any symptoms.
To check for rejection even if your child has no symptoms, we will take small samples (biopsies) of the transplanted intestine to look for signs of rejection. We do the biopsies using an endoscope. Looking at the sample of intestine under a microscope, we can see if there has been any injury to the intestine caused by the immune system.