Diagnostic Laboratory Test Overview: What It Is, How the Sample Is Collected, and Why Your Doctor May Order It

This section explains what the test is, including what it measures in your body, why your healthcare provider ordered it, and what your results may reveal about your overall health.

The pericardial fluid amylase test measures the amount of amylase enzyme in the fluid between the heart's outer membrane (pericardium) and the heart muscle. Amylase is primarily produced by the pancreas and salivary glands to help digest carbohydrates. Normally, amylase levels in pericardial fluid are very low. Elevated levels suggest that amylase is leaking into the pericardial space from nearby organs.

This section describes how the sample is collected, such as through a blood draw, urine sample, swab, or other method, and walks you through what to expect during the collection procedure.

Pericardial fluid is collected through a procedure called pericardiocentesis. A thin needle is inserted into the pericardial sac (the space around the heart) to withdraw fluid. This is typically done under local anesthesia with ultrasound guidance to ensure safety and accuracy. The collected fluid is then sent to the laboratory for amylase measurement.

This section explains why the test is performed, including how it helps screen for, diagnose, or monitor medical conditions, and how the results guide your doctor in planning the right treatment for you.

This test is performed when a patient has pericardial effusion (accumulation of fluid in the pericardial sac) and the doctor needs to determine the cause. By measuring amylase levels, healthcare providers can identify whether the fluid accumulation is related to pancreatic or upper gastrointestinal tract pathology.