what is alkaline phosphatase test
An alkaline phosphatase (ALP) test measures the amount of the enzyme ALP in the blood. ALP is made mostly in the liver and in bone with some made in the intestines and kidneys. It also is made by the placenta of a pregnant woman. test for alkaline phosphatase (ALP) is done to: 1  Check for liver disease or damage to the liver. 2  Symptoms of liver disease can include jaundice, belly pain, nausea, and vomiting.