Alkaline Phosphatase Unit Converter

Alkaline phosphatase (ALP) is an enzyme found throughout your body that helps break down proteins and plays a role in various metabolic processes. Although its exact function is not fully understood, it is important for bone mineralization and liver function.

In adults, over 80% of the ALP in blood originates from the liver and bones, with smaller amounts coming from the intestines, kidneys, and placenta (in pregnancy). Each tissue produces a distinct form of ALP called an isoenzyme.

Because different tissues produce different types of ALP, abnormal levels can point to problems in the liver, bones, or other organs. However, an ALP test alone cannot identify the source without additional testing.

ALP is produced primarily in the liver (canalicular membrane of hepatocytes) and bones (osteoblasts), with smaller amounts from the intestines, kidneys, and placenta during pregnancy.