Pancreatic blood test mainly looks at amylase and lipase, which can be used to determine whether you have pancreatitis according to the test results. If you want to make further diagnosis, it is recommended to perform an enhanced CT of the abdomen to make a clear diagnosis. 1. Amylase: When patients suffer from pancreatitis, serum amylase begins to rise 2~12 hours after the onset of the disease, and begins to decline in 48 hours, lasting 3~5 days. Since salivary glands can also produce amylase, when a patient has elevated blood amylase without acute abdomen, it should be considered to be of salivary gland origin. Circulating amylase is excreted by the kidneys, and urinary amylase is therefore elevated in pancreatitis. 2. Lipase: Serum lipase begins to rise 24-72 hours after the onset of the disease and lasts for 7-10 days, and its sensitivity and specificity are slightly better than that of blood amylase. There is no exact correlation between the level of serum amylase and lipase and the degree of disease, and the two pancreatic enzymes may not be elevated in some patients. The levels of the above two pancreatic enzymes are significantly elevated in pancreatogenic pleural and abdominal effusions and pancreatic pseudocyst cystic fluid.