All the following can be used to predict severe acute pancreatitis except:-

Tools for predicting severity in Acute pancreatitis ready for clinical use On admission At 24 hours At 48 hours APACHE II score >= 8 IL-6 Urea >60 mmol/L Polymorphonuclear elastase Urinary trypsinogen 2 Urinary trypsinogen activation peptide Ranson/Glasgow score >= 3 CRP >= 130 mg/mL