From Diagnostics to Prescribing: Antibiotic and Diagnostic Stewardship in Contemporary UTI Care

Background: Urinary tract infections (UTIs) are a leading cause of urine testing and antibiotic prescribing across healthcare settings. Despite established clinical guidelines, inappropriate practice such as unnecessary urine cultures, treatment of asymptomatic bacteriuria, suboptimal antibiotic selection, and excessive treatment duration remain common. These practices contribute to antimicrobial resistance, adverse drug events, and increased healthcare costs. Methods: This narrative review synthesises evidence from PubMed-indexed studies, including systematic reviews, randomised controlled trials, and implementation studies, to evaluate the impact of antibiotic and diagnostic stewardship interventions on UTI management. Studies assessing outcomes related to urine testing practices, antibiotic utilisation, and clinical safety were included. Discussion: The literature demonstrates that integrated stewardship interventions effectively reduce inappropriate urine testing and antibiotic use without negatively affecting patient outcomes. Diagnostic stewardship strategies such as limiting urine cultures to patients with appropriate clinical indications, implementing reflex testing algorithms, and improving result interpretation reduce downstream antibiotic overuse. When combined with antibiotic stewardship approaches including clinical decision support, audit-and-feedback, and bundled interventions, these strategies lead to sustained improvements in prescribing behaviour and care quality. Conclusions: Antibiotic and diagnostic stewardship are synergistic and essential components of optimal UTI management. Interventions targeting both diagnostic decision-making and antibiotic use can safely reduce unnecessary testing and treatment. Future stewardship efforts should prioritise integrated, multidisciplinary approaches supported by clinical decision support tools to enable real-time, sustainable improvements in UTI care across clinical settings.