Inclusion Criteria:  Participant ≥ 18 years of age Scheduled to have a double J catheter ablation Participants covered by or entitled to social security Written informed consent obtained from the participant Ability for participant to comply with the requirements of the study  Exclusion Criteria:  Patients already receiving antibiotics other than febrile renal colic antibiotics Study interventions contraindications Pregnancy, breastfeeding Patient under tutorship or curators Deprivation of liberty