Muthusami P, et al. – The role of post–procedural hemoglobin (hb), without pre–discharge ultrasound (US), after US–guided renal biopsy in children was examined. It was observed that bleeding complications from US–guided native kidney biopsies in pediatric outpatients could be safely followed by a complete blood count at 6 h post procedure. For further testing and/or admission, a 10% hb decrease was strongly associated with the requirement.