The Lipase Serum test is the most specific and reliable blood test for diagnosing acute pancreatitis. Lipase is a digestive enzyme made by your pancreas. When the pancreas is inflamed or injured, it releases large amounts of lipase into your bloodstream. This test is the gold standard for investigating sudden, severe abdominal pain that radiates to the back. This simple blood test is the most accurate tool to confirm or rule out pancreatitis, ensuring you get the fast, targeted treatment you need.