How does the ER check for pancreatitis?

How Doctors Diagnose Pancreatitis in the ER

When someone arrives at the emergency room with severe abdominal pain, nausea, or vomiting, doctors often suspect pancreatitis—especially if the pain radiates to the back and worsens after eating. To confirm the diagnosis, a combination of tests and imaging is used.

Blood tests are usually the first step. They measure levels of digestive enzymes like amylase and lipase, which spike dramatically during a pancreatic flare-up. Elevated liver enzymes or signs of infection can also provide clues about the overall condition of the pancreas and surrounding organs.

If blood work suggests trouble, imaging follows. An abdominal ultrasound is often performed early because it’s fast, noninvasive, and effective at spotting gallstones—a common trigger of pancreatitis. It can also reveal swelling or fluid buildup around the pancreas, indicating inflammation.

But sometimes, ultrasound isn’t enough. A CT scan offers a more detailed view, helping doctors assess the severity of inflammation, detect complications like tissue damage or abscesses, and identify gallstones not visible on ultrasound. It’s especially useful when symptoms are severe or not improving.

In some cases, doctors may also order an MRI or endoscopic ultrasound for a closer look, but in the fast-paced ER setting, blood work and CT scans are the go-to tools. Early and accurate diagnosis is crucial—pancreatitis can range from mild to life-threatening, and catching it quickly improves outcomes.

While the process may feel overwhelming in the moment, these steps help ensure patients get the right care fast—whether that’s IV fluids, pain control, or, in some cases, surgery to remove blockages.