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Lipase test

Definition

Lipase is a protein (enzyme) released by the pancreas into the small intestine. It helps the body absorb fat. This test is used to measure the amount of lipase in the blood.

Alternative Names

Pancreatitis - blood lipase

How the Test is Performed

A sample of blood will be taken from a vein.

How to Prepare for the Test

Do not eat for 8 hours before the test.

Your health care provider may ask you to stop taking medicines that may affect the test, such as:

  • Birth control pills
  • Cholinergic medicines
  • Indomethacin
  • Opiates (codeine, meperidine, and morphine)
  • Thiazide diuretics

How the Test will Feel

You may feel slight pain or a sting when the needle is inserted to draw blood. There may be some throbbing at the site after the blood is drawn. Veins and arteries vary in size, so it may be harder to take a blood sample from one person than another.

Why the Test is Performed

This test is done to check for disease of the pancreas, most often acute pancreatitis.

Lipase appears in excessive amounts in the blood when the pancreas is damaged.

Normal Results

In general, normal results are 0 to 160 units per liter (U/L) or 0 to 2.67 microkat/L (µkat/L).

Normal value ranges may vary slightly among different laboratories. Some laboratories use different measurement methods. Talk to your provider about the meaning of your test results.

What Abnormal Results Mean

Higher-than-normal levels may be due to:

  • Blockage of the bowel (bowel obstruction)
  • Celiac disease
  • Cancerof the pancreas
  • Pancreatitis
  • Pancreatic or bile duct blockage
  • Pancreatic pseudocyst
  • Perforated ulcer
  • Renal failure
  • Salivary gland inflammation

This test may also be done for familial lipoprotein lipase deficiency.

Risks

There is very little risk from your blood taken.

Other uncommon risks may include:

  • Bleeding from the needle puncture site
  • Fainting or feeling lightheaded
  • Blood collecting under the skin
  • Infection (a slight risk any time the skin is broken)

Gallery

Blood test
Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.

References

Crockett SD, Wani S, Gardner TB, Falck-Ytter Y, Barkun AN; American Gastroenterological Association Institute Clinical Guidelines Committee. American Gastroenterological Association Institute guideline on initial management of acute pancreatitis. Gastroenterology. 2018;154(4):1096-1101. PMID: 29409760 pubmed.ncbi.nlm.nih.gov/29409760/.

Forsmark CE. Pancreatitis. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 135.

Siddiqi HA, Rabinowitz S, Axiotis CA. Laboratory diagnosis of gastrointestinal and pancreatic disorders. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 23.

Vege SS. Acute pancreatitis. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 58.

Last reviewed January 24, 2021 by David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team..

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