little white coats: Which of the following statements is false regarding acute pancreatitis?

The degree of elevation of serum lipase or amylase at admission predicts the severity of disease.
Hemoconcentration and failure of hematocrit to decrease at 24 hours are important predictors of severe pancreatitis.
It is best to delay abdominal CT imaging 2-4 days after admission if the diagnosis of acute pancreatitis can be made on the basis of elevated pancreatic enzymes and characteristic abdominal pain because CT at admission may underestimate severity of necrosis.