Although its role in human physiology is cloudy, alkaline phosphatase is an enyme which is tested to evaluate liver function. Since the liver is not the only organ containing alkaline phosphatase, other systems can emit this enzyme during pathological processes or normal growth (in case of children).
Drugs can also increase alkaline phosphatase including some examples:
For increased alkaline phosphatase, a complete history and physical examination is needed to determine the cause. Other testing may be needed including imaging of the gall bladder, liver, bones or thyroid and further lab testing: