Organ distribution For distribution of available organs, patients on the US national waitlist are given a prognostic score derived from creatinine, bilirubin, and international normalized ratio (INR) measurements (using the Model for End-Stage Liver Disease [MELD] for adults) or from age and serum albumin, bilirubin, INR, and growth failure measurements (using the model for Pediatric End-Stage Liver Disease [PELD] for children).