Quantitative fecal fat analysis is used to assess which aspect of pancreatic function?

• A. Exocrine secretory capacity
• B. Endocrine function
• C. Bile acid absorption
• D. Gastric acid secretion

Answer: (A)

Fecal fat quantification directly gauges how well the pancreas can deliver digestive enzymes for fat digestion. Fat in the stool increases when the exocrine pancreas doesn’t secrete enough lipase and other enzymes, as in pancreatic exocrine insufficiency. By measuring how much fat is lost in stool, the test assesses the pancreas’s ability to perform its digestive (exocrine) function. Endocrine function relates to hormone production (like insulin), which this test does not measure. Bile acid absorption and gastric acid secretion involve different processes and would not be specifically evaluated by this test, whereas a high fecal fat result most strongly points to inadequate pancreatic lipase activity.