Fluid Amylase

A fluid amylase test is advised by a doctor when there is unexplained ascites or pleural effusion, especially in people with pancreatitis, a pancreatic pseudocyst, or heavy alcohol use. It is also used after pancreatic or abdominal surgery to check drain fluid for a pancreatic leak, and when esophageal rupture is suspected.

A fluid amylase test uses a fluid sample collected by a doctor through paracentesis or thoracentesis, or directly from a surgical drain. Inform your doctor about any blood thinners, allergies, bleeding disorders, or pregnancy. Fasting is usually not required. A blood sample for serum amylase is often taken at the same time for comparison.

No, fasting is usually not required for a fluid amylase test. You can eat and drink normally unless your doctor advises otherwise, for example if sedation is planned for the fluid collection procedure. Inform your doctor about any blood thinners or bleeding disorders, and follow the hospital's specific instructions.