Is Blood Urea Concentration an Independent Predictor of Positive Endoscopic Findings in Presumed Upper Gastrointestinal Bleeding?

<b><i>Background:</i></b> The test characteristics of blood urea concentration in the identification of upper gastrointestinal bleeding (UGIB) or high-risk endoscopic lesions have not been clearly determined. This study aimed to elucidate if urea independently correlates with the presence of positive endoscopic findings in cases of presumed UGIB and understand the diagnostic value of this parameter when assessing a...