This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Ranson's aitaria for prognosis in acute pancreatitis include all except - 
Select and explain. 
A. WBC > 16,000 cells/cumin, B. Age over 55 years, C. AST > 250 U/100 ml, D. S.amylase > 350 I.U.
D: S.amylase > 350 I.U.
Answer: D: S.amylase > 350 I.U. 
Explanation: None