Trypsinogen test

A blood sample is taken from a vein. The blood sample is sent to a lab for testing.

There are no special preparations. You may be asked to not eat or drink for 8 hours before the test.

You may feel slight pain or a sting when the needle is inserted to draw blood. Afterward, there may be some throbbing.

This test is done to detect diseases of the pancreas.

The test is also used to screen newborn babies for cystic fibrosis.

Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results.

Increased levels of trypsinogen may be due to:

• Abnormal production of pancreatic enzymes
• Acute pancreatitis
• Cystic fibrosis
• Pancreatic cancer

Very low levels may be seen in people with chronic pancreatitis.

There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight, but may include:

• Fainting or feeling lightheaded
• Multiple punctures to locate veins
• Hematoma (blood buildup under the skin)
• Excessive bleeding
• Infection (a slight risk any time the skin is broken)

Other tests used to detect pancreas diseases may include:

• Serum amylase
• Serum lipase

Serum trypsin; Trypsin-like immunoreactivity; Serum trypsinogen; Immunoreactive trypsin

Chernecky CC, Berger BJ. Trypsin- plasma or serum. In: Chernecky CC, Berger BJ, eds. Laboratory Tests and Diagnostic Procedures. 6th ed. St Louis, MO: Elsevier Saunders; 2013:1125-1126.

Forsmark CE. Chronic pancreatitis. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 59.

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.

Updated by: Michael M. Phillips, MD, Emeritus Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.