What does it mean when alkaline phosphatase levels are elevated?
Disease description:
The physical examination report shows elevated alkaline phosphatase levels. I would like to know what it means to have elevated alkaline phosphatase?
Doctor's answer (1)
Dr. Shen Yonghua
Alkaline phosphatase is an enzyme present in various tissues throughout the body, and is particularly abundant in the liver, bones, intestines, and placenta. Generally, alkaline phosphatase levels are considered elevated when they approach or exceed 125 U/L in males, approach or exceed 100 U/L in females aged 20–49 years, and approach or exceed 135 U/L in females aged 50–79 years. Common causes of elevated alkaline phosphatase levels include:
1. Liver and biliary tract diseases: such as hepatitis, cirrhosis, and bile duct obstruction.
2. Bone diseases: such as osteoporosis, bone healing after fractures, and bone tumors.
3. Cancers: particularly liver cancer and cancers that have metastasized to the bones.
4. Medication effects: certain drugs may damage liver cells, leading to elevated alkaline phosphatase levels.
5. Other diseases: including gallbladder inflammation, gallstones, and bone disorders such as rickets.
6. Non-disease factors: such as improper diet, pregnancy, aging, long-term sleep deprivation, alcohol consumption, or use of certain medications.
In children, alkaline phosphatase levels are typically higher than in adults due to active bone growth. However, significantly elevated levels still warrant further investigation.
