High proportion of false negative urinary tract infections among dilute urine samples

Objective Observation has led us to believe that urinary tract infections (UTI) may be difficult to diagnose from a dilute urine specimen. We conducted this study to determine the effect of urine concentration on identifying UTI based on urinalysis (UA) results. Methods We reviewed the UA results of febrile children under 36 months of age with positive urine cultures. We …