Long surgical waiting list times are associated with an increased rate of negative ureteroscopies.

Introduction: Negative ureteroscopy (NURS) is "a ureteroscopy in which no stone is found during the procedure." We aimed to determine the association between the surgical waiting list time (WLT) and the NURS rate.

Methods: We retrospectively analyzed all patients scheduled for ureteroscopy in our center between January 2017 and July 2019.