This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Medicine
Definitive diagnosis of acute pancreatitis is done by- 
Select and explain. 
A. Lipase, B. S. alkaline phosphatase, C. Increased Ca++, D. Hyperglycemia
A: Lipase
Answer: A: Lipase 
Explanation: Ans - A. Serum lipase activity increases in parallel with amylase activity and is more specific than amylase. A serum lipase measurement can be instrumental in differentiating a pancreatic or nonpancreatic cause for hyperamylasemia.