Upper Urinary Tract Culture Positivity in Obstructive Ureterolithiasis—Clinical Severity, Inflammatory Biomarkers, and Early Risk Assessment

Background/Objectives: Obstructive ureterolithiasis complicated by infection may progress rapidly to systemic deterioration, while microbiological confirmation is generally unavailable during initial assessment. This study evaluated the association of admission procalcitonin (PCT), National Early Warning Score 2 (NEWS2), and routine urinary parameters with positive upper urinary tract culture in patients requiring urgent urinary decompression.