CLINICAL NEPHROLOGY: Edited by David S. GoldfarbDifferences in national and international guidelines regarding use of kidney stone formers as living kidney donorsTatapudi, Vasishta S.a; Goldfarb, David S.bAuthor Information aNYU Langone Transplant Institute, NYU Langone Health bNephrology Section, New York Harbor VA Medical Center and NYU School of Medicine, New York, New York, USA Correspondence to Vasishta S. Tatapudi, MD, Attending Physician, NYU Langone Transplant Institute, NYU Langone Health, Assistant Professor of Medicine, New York University School of Medicine, 403 E 34th street, 2nd floor, Office 212, New York, NY 10016, USA. Tel: +1 212 263 8396; fax: +1 212 263 8157; e-mail: Vasishta.Tatapudi@nyulangone.org Current Opinion in Nephrology and Hypertension: March 2019 - Volume 28 - Issue 2 - p 140-147 doi: 10.1097/MNH.0000000000000480 Buy Metrics Abstract Purpose of review Traditionally, nephrolithiasis was considered a relative contraindication to kidney donation because of a risk of recurrent stones in donors and adverse stone-related outcomes in recipients. However, the scarcity of organs has driven the transplant community to re-examine and broaden selection criteria for living donors with stones. In this review, we summarize and contrast the guidelines published by various prominent national and international societies on this topic. Recent findings Although recent iterations of living donor guidelines are less stringent with respect to nephrolithiasis than those published in the 1990s, there is little consensus among national and international transplant society guidelines regarding selection criteria for potential kidney donors with nephrolithiasis. Summary The lack of evidence-based guidelines deters transplant centers from implementing selection criteria to accept donors with nephrolithiasis and discourages studies of outcomes in donors with nephrolithiasis and their recipients. In addition to drawing attention to the disparities in prevailing guidelines, we put forth several questions that must be answered before generalizable criteria for selection of donor with nephrolithiasis can be developed. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.