Bleeding after laparoscopic sleeve gastrectomy (LSG) is an important complication associated with significant morbidity and a drastic increase in healthcare resources. Multiple strategies have been developed to minimize bleeding, including varying bougie size, line reinforcement, and intra-operative tranexamic acid. These techniques, however, have been implemented without a clear understanding of the pre-, intra-, and postoperative predictors of bleeding in patients undergoing SG.