What is the primary purpose of TLI (trypsin-like immunoreactivity)?

What is the primary purpose of TLI (trypsin-like immunoreactivity)?

• A. Diagnosis of exocrine pancreatic insufficiency
• B. Diagnosis of pancreatitis
• C. Assessment of intestinal absorption
• D. Evaluate liver function

Answer: (A)

TLI measures trypsin-like immunoreactivity to assess how well the pancreas is producing digestive enzymes. In exocrine pancreatic insufficiency, the pancreatic acinar tissue doesn’t secrete enough enzymes, so the level of trypsin-like immunoreactivity falls. This makes the test a direct functional indicator of pancreatic exocrine capacity, helping confirm EPI as the cause of maldigestion and related symptoms. It’s not a test for pancreatitis, which involves inflammation of the pancreas and is evaluated with other markers; it doesn’t directly measure intestinal absorption or liver function.

TLI measures trypsin-like immunoreactivity to assess how well the pancreas is producing digestive enzymes. In exocrine pancreatic insufficiency, the pancreatic acinar tissue doesn’t secrete enough enzymes, so the level of trypsin-like immunoreactivity falls. This makes the test a direct functional indicator of pancreatic exocrine capacity, helping confirm EPI as the cause of maldigestion and related symptoms. It’s not a test for pancreatitis, which involves inflammation of the pancreas and is evaluated with other markers; it doesn’t directly measure intestinal absorption or liver function.