What does low serum alkaline phosphatase mean?
My sister-in-law called and said that her son's serum alkaline phosphatase level is low, and the family is very worried. What does it mean when the serum alkaline phosphatase level is low?
Doctor's answer (1)
Low serum alkaline phosphatase refers to a blood test result where the level of alkaline phosphatase falls below the normal range.
The normal range for serum alkaline phosphatase is generally 45–125 U/L for adult males and 35–100 U/L for females aged 20–49 years. When test results fall below these ranges, it is considered low.
Causes of low serum alkaline phosphatase include severe chronic nephritis, thyroid dysfunction, excessive vitamin D intake, pernicious anemia, and scurvy. Low serum alkaline phosphatase may cause symptoms such as anemia, edema, abnormal urine, palpitations, and muscle pain.
Changes in serum ALP levels are only one indicator in the diagnostic process and should be analyzed in conjunction with other clinical information. If ALP levels are abnormal, further tests and treatment are recommended.
