The results of the preoperative blood examinations, including WBC, neutrophil ratio (NEUT), platelet count, CRP, prothrombin time (PT), activated partial thromboplastin time (APTT), Fib, thrombin time (TT), and D-dimer (DD), were compared between the simple intestinal obstruction group and the strangulated intestinal obstruction group. Here, F2 is linked to intestinal obstruction.