Dr. Tom Blydt-Hansen is a Clinical Pediatric Nephrologist at the BC Children's Hospital, and a Clinician Scientist at the BC Children's Hospital Research Institute. He is also the Director of the Pediatric Multi-Organ Transplant Program at BC Children's Hospital and Associate Professor in the UBC Department of Pediatrics. Dr. Blydt-Hansen's research program will use proven techniques to identify signs of kidney injury and rejection in the urine of children who have had a kidney transplant. It will focus on the first year after transplant, since this is the highest risk for rejection. They will look for metabolites and chemokines that they have tested before to identify when injury or rejection is present. They already know some of the changes that occur with rejection. They now plan to validate that the same changes are present in other Canadian children with kidney transplants.