Alkaline phosphatase (ALP) is an enzyme found in various tissues throughout the body, including the liver, bone, and kidney. It plays a crucial role in breaking down proteins and is involved in processes like bone mineralization and liver function. Elevated levels of ALP can indicate issues such as liver disease, bone disorders, or bile duct obstructions. In the liver, ALP is primarily associated with bile production, while in bone, it is linked to the activity of osteoblasts, the cells responsible for bone formation. In the kidney, ALP helps in the reabsorption of phosphate. Testing ALP levels can provide valuable insights into these organs' health.