Serum feline trypsin-like immunoreactivity in cats with exocrine pancreatic insufficiency

Exocrine pancreatic insufficiency is thought to occur rarely in cats. This assumption has been made based on the lack of a specific test for this dise ase in the cat. Clinical data from the 1st 20 cats with serum feline trypsi n-like immunoreactivity (fTLI) concentrations less than or equal to8 mug/L are presented. In 17 of these 20 cats compelling evidence for a diagnosis o f exocrine pancreatic insufficiency (EPI) was present and in the remaining 3 supportive evidence for a diagnosis of EPI was available. The conclusion was made that serum fTLI concentration is a specific test for EPI in the ca t.