Kidney biopsies can find signs of rejection even though your child does not show any outward symptoms or signs. Biopsies are usually not done on a routine hospital ward but in a designated area and under sedation. Some transplant centers perform kidney biopsies on a routine schedule (protocol biopsies) to monitor for rejection. Other centers perform biopsies only if there is a concern for rejection or other kidney problem.
A pathologist looks at small sample of kidney tissue under a microscope for signs of rejection. The results from this study are reported back as a number under a special grading scale.