. Urine amylase levels increase primarily due to pancreatic disorders, such as acute pancreatitis, chronic pancreatitis, and pancreatic duct obstruction. Other causes include bile duct obstruction, gastrointestinal perforation, and viral infections like mumps, which can affect the salivary glands.
. The urine amylase test is mainly used to support the diagnosis of acute pancreatitis, particularly when serum amylase levels return to normal quickly. Results should be interpreted alongside other clinical findings and laboratory tests for an accurate diagnosis.