Pancreatic Elastase: One Stool Test, Three Very Different Answers Depending on Your Number
A single stool sample can tell you whether your pancreas is doing its job. Fecal elastase-1 (FE-1), a digestive enzyme produced by your pancreas, stays remarkably stable as it travels through your entire digestive tract. That stability makes it one of the most practical, non-invasive ways to assess exocrine pancreatic function, which is your pancreas's ability to produce the enzymes needed to digest food. But the test has a significant blind spot: it reliably catches moderate-to-severe pancreatic insufficiency while frequently missing mild cases. That distinction matters. If your doctor orders this test, understanding where your number falls, and what that number can and cannot tell you, is the difference between appropriate next steps and unnecessary anxiety or false reassurance.