

Alkaline phosphatase (ALP) is a substance found in all body tissues. There are many different forms of ALP. Each type has a different chemical structure, called an isoenzyme -- its structure depends on where in the body it is produced. For example, liver and bone ALP isoenzymes look different.
The ALP isoenzyme test is a blood test that measures the amounts of different types of ALP.
See also: Alkaline phosphatase test
Alkaline phosphatase isoenzyme test