ALB and Hypoalbuminemia: The same phenomenon was observed in patients who had undergone lower extremity bypass surgery; patients who had severe hypoalbuminemia (<28 g/L) before surgery had a higher readmission rate than did patients with normal albumin (within 30 days: 40.0% vs. 17.8%, within 90 days: 66.7% vs. 35.6%) [32].