Alkaline phosphatase (ALP) Alkaline phosphatase (ALP)

Alkaline phosphatase isoenzymes have been identified from various organs including the liver, bone, gastrointestinal tract, and kidney, and there is a specific isoenzyme produced in response to steroids in dogs. Increased ALP concentrations are usually associated with liver (particularly bile outflow obstruction) or bone disease (particularly tumours with new bone production as well as destruction or renal hyperparathyroidism)

ALP concentrations are increased in 90% of feline hyperthyroid cases.