Alkaline phosphatase is an enzyme found in various tissues throughout the body, including the liver, bones, kidneys, and bile ducts. It plays a crucial role in breaking down proteins and is involved in processes like bone mineralization and liver function. Elevated levels of alkaline phosphatase in the blood can indicate certain health conditions, such as liver disease, bone disorders, or bile duct obstructions. Doctors often measure alkaline phosphatase levels as part of routine blood tests to help diagnose and monitor these conditions.