Practice question

A 48-year-old man with a history of alcohol excess presents with severe epigastric pain radiating to the back, nausea, and vomiting for 12 hours. His serum amylase is 2000 U/L. His observations are: Temp 37.8°C, HR 110 bpm, BP 100/60 mmHg, RR 24/min, SaO2 95% on air. His urea is 9 mmol/L, WCC 18 x10^9/L, glucose 12 mmol/L, LDH 400 IU/L, AST 200 IU/L. What is his modified Glasgow score for pancreatitis severity?