Alkaline Phosphatase


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Quest Diagnostics Test Code: 234

Alkaline phosphatase is predominantly produced in liver, kidney, and bones. It is an extremely important diagnostic tool for hepatitis, cirrhosis, cholecystitis and many other serious health conditions.

Alkaline phosphatase (ALP) is a phosphatase enzyme that helps to break down bigger molecules in the body and is found in various tissues. While most of it is made and found in the liver, it can also be made and found in the bones, intestines, pancreas, and kidneys. ALP is one of the tests performed to check for liver function. Abnormal levels of ALP can indicate diseases such as bone diseases, gallbladder problems and liver damage, but may also indicate things like malnutrition or pancreatic diseases. Potentially life-threatening liver diseases such as liver cancer, cirrhosis and hepatitis all cause a raised ALP blood test result. Because this enzyme is not disease-specific, it is used in conjunction with other liver function tests to come to a diagnosis.

This test is performed in following conditions such as:

• Jaundice (yellowing of the skin and eyes)
• Nausea and vomiting
• Pain in the abdomen on the upper right
• A significant drinking history
• Bone pain or bone fractures
• Gallstones

Also Known As: ALP


The Alkaline Phosphatase test (ALP test) does not require any fasting prior to collection.


Specimen Collected
  • Blood
Estimated Time Taken

Turnaround time for the Alkaline Phosphatase test (ALP test) is typically 1 business day.