Serum Lipase
Lipase is an enzyme made almost exclusively by the pancreas that helps digest dietary fats. When the pancreas is inflamed or injured, lipase leaks into blood and rises 4–8 hours after injury, peaks at 24 hours, and stays elevated for up to 14 days. Lipase is more specific than amylase for pancreatitis and is the preferred first-line test.
Reference Ranges
Male
10 – 60
U/L
Female
10 – 60
U/L
Child
10 – 60
U/L
Ages 1–12
Reference ranges may vary by laboratory. Always compare with the range printed on your lab report.
What Low Levels Mean
Low lipase is uncommon and usually not clinically significant. Chronically low lipase can be seen in advanced chronic pancreatitis when much of the pancreas has been destroyed, or in cystic fibrosis with pancreatic insufficiency.
What High Levels Mean
Lipase above 3× the upper limit of normal (roughly >180 U/L) in a patient with abdominal pain is the biochemical criterion for acute pancreatitis. Causes include gallstones, alcohol, high triglycerides, certain drugs, and post-ERCP. Milder elevations can also be seen in bowel obstruction, kidney failure, and diabetic ketoacidosis.
Frequently Asked Questions
Should I get lipase or amylase tested for pancreatitis?
Lipase. It is both more sensitive and more specific than amylase for acute pancreatitis, and it stays elevated for longer — useful when the patient presents late. Modern guidelines recommend lipase as the first-line test; amylase adds little once lipase is available.
How high does lipase go in pancreatitis?
Any value above 3× upper limit of normal in the right clinical setting confirms pancreatitis. The absolute value does not predict severity — someone with lipase of 500 U/L may be sicker than someone with 2,000 U/L. Severity is assessed with clinical scoring systems and imaging.
Can lipase be normal in pancreatitis?
Rarely. In chronic pancreatitis with a burnt-out pancreas, lipase can be normal or low even during acute flares because there is little enzyme-producing tissue left. Imaging (CT, MRI) is needed when clinical suspicion is high but lipase is unexpectedly normal.
This information is for educational purposes only and should not replace professional medical advice. Always consult your doctor for interpretation of your test results.
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