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Trypsinogen
This test measures levels of trypsin in your blood to see if you have pancreatitis.
Your pancreas is an organ in your belly that lies behind your stomach. One of its jobs is to make enzymes that go into your small intestine to help you digest foods. The pancreas can become inflamed (pancreatitis). This can happen suddenly (acute pancreatitis). Or stay inflamed over a longer time (chronic pancreatitis).
During acute pancreatitis, enzymes from your pancreas can escape into your blood. One of these enzymes is trypsin. It's made from trypsinogen. Trypsinogen turns into trypsin in the small intestine, and the names of the 2 are sometimes used interchangeably.
You may need this test if your healthcare provider suspects that you have pancreatitis. Symptoms of acute pancreatitis include:
Pain in your upper belly that can come on quickly and last for days. The pain may be severe, and it may travel to your back. Leaning forward may relieve the pain.
Fever
Nausea and vomiting, which can last for hours
Agitation
Fast pulse
Weight loss
Chronic pancreatitis can cause many of the same symptoms, as well as some that are different. They include:
Pain that is often worse just after you eat. It may strike in flare-ups early in the disease and later become steadier.
Oily, foul-smelling stools because of problems absorbing fat from foods
Glucose intolerance or diabetes
Heavy alcohol use over time can cause pancreatitis, as can certain types of medicines.
Your healthcare provider may also order a number of other tests if you have symptoms of pancreatitis. Tests for acute pancreatitis may include measurements of:
Amylase, another kind of pancreatic enzyme, which may be in your blood or urine
Lipase, another pancreatic enzyme found in your blood
Other substances in your blood that point to inflammation, including C-reactive protein
Other tests for chronic pancreatitis may include:
Measurement of fat in stool samples collected over a 72-hour period
Measurement of a substance called fecal elastase in a stool sample
Test results may vary depending on your age, gender, health history, and other things. Your test results may be different depending on the lab used. They may not mean you have a problem. Ask your healthcare provider what your test results mean for you.
Higher levels of trypsin can mean that you have acute pancreatitis.
The test is done with a blood sample. A needle is used to draw blood from a vein in your arm or hand.
Having a blood test with a needle carries some risks. These include bleeding, infection, bruising, and feeling lightheaded. When the needle pricks your arm or hand, you may feel a slight sting or pain. Afterward, the site may be sore.
Other things aren't likely to affect your results.
You don't need to prepare for this test. Be sure your healthcare provider knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illegal drugs you may use.