Cleaning of the perineal/genital area before urine collection from toilet-trained children prevented sample contamination

摘要: S Vaillancourt Correspondence to: Dr Vaillancourt, Montreal Children’s Hospital, Montreal, Quebec, Canada; suzanne.vaillancourt@mail.mcgill.ca When collecting a midstream urine sample from toilet-trained children, does cleaning of the perineal/genital area before collection prevent contamination? ### Design: cluster randomised (by week) controlled trial. ### Allocation: not concealed. ### Blinding: blinded (microbiologists). ### Follow-up period: 48 hours. ### Setting: emergency department tertiary care paediatric centre in Canada. ### Patients: 350 children 2–18 years age (45% 2–5 y, 37% 6–12 and 18% 13–18 y; 60% girls) who had requested for any medical reason. Children with developmental delay were excluded. ### Intervention: cleaning twice, using liquid soap gauze pads (n = 179) or no (n = 171) sterile container. Only samples positive urinalysis result sent to microbiology …