What is the reason for elevated alkaline phosphatase?

Patient's question:

Patient Age: 12
Detailed Condition and Purpose of Consultation: Elevated alkaline phosphatase, checked three times: 390, 360, 180.
Duration and Onset of Current Illness: 1 year
Previous Diagnoses, Treatments, and Outcomes: Unclear

Doctor's answer:

Hello, high alkaline phosphatase is common in active bone formation, often due to calcium deficiency. Children's bones are constantly developing, so calcium supplements can be taken, pay attention to diet, and eat more calcium-rich foods. Don't worry.
There are many causes of pediatric endocrine diseases. If the child is diagnosed with a pediatric endocrine disease, parents need to cooperate with the doctor in active treatment, cooperate with gastrointestinal decompression, and develop good hygiene habits. Parents should pay attention not to develop picky eating habits in children and maintain a balanced diet.