The AUC of the combined measurement of RDW, creatinine, and albumin was 0.964 (P < 0.001, 95% CI: 0.92 to 1.00) with RDW ≥ 14.45%, creatinine ≥ 125.5 μmol/l, and albumin ≤ 34.95 g/l indicating a good predictive value for mortality among patients with AP. Here, ALB is linked to alkaline phosphatase measurement.