Acute Pancreatitis (AP) is an inflammatory process with a highly variable clinical course and includes a wide spectrum of disease, from one with mild self–limiting symptoms to fulminant process with multi–organ failure and high mortality. Most patients with AP have a mild disease that resolves spontaneously without sequelae, however, 10%–20% of patients experience a severe attack with high mortality up to 30% ^{[1; 2]} This high risk group of patients may benefit from aggressive fluid management, close monitoring for development of organ failure and other specific therapeutic interventions like endoscopic sphincterotomy and radiologic interventions ^[3].  Thus, the early assessment of the severity and stratification of patients at risk is important for early intensive therapy and timely intervention to improve prognosis and survival.