[Photometric determination of chymotrypsin in feces of the dog. A new method in the diagnosis of chronic exocrine pancreatic insufficiency].

The advantages of the photometrical analysis of chymotrypsin in stool of dogs are: the short duration of procedure, the small amount of stool necessary and the simplified manner of measurement at 405 nm. The test was performed in healthy as well as in chronically pancreatic insufficient dogs and those with other origins of diarrhea. The normal value for healthy dogs was more than 1 U chymotrypsin/g stool. Because of distinct individual ranges of chymotrypsin activities a single detection is not sufficiently diagnostic. Several results below 1 U/g stool indicate a great likelihood of chronic pancreatic insufficiency.