A test for alkaline phosphatase (ALP) is done to:
- Check for liver disease or damage to the liver. Symptoms of liver disease can include jaundice, belly pain, nausea and vomiting. An ALP test may also be used to check the liver when medicines that can damage the liver are taken.
- Check bone problems (sometimes found on X-rays), such as rickets, bone tumors, Paget's disease or too much of the hormone that controls bone growth (parathyroid hormone). The ALP level can be used to check how well treatment for Paget's disease or a vitamin D deficiency is working.
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