Dr Lisa Ruml answers:
Yes, if a cystinuric patient receives a kidney from a non-cystinuric donor, that kidney will function normally and will be able to reabsorb cystine from the urine. Unfortunately, a renal transplant is a major procedure with long-term consequences from the medications required to prevent rejection. It is, however, the only option in some instances, but the need for this drastic measure is not common.