This test measures the amount of a substance called alkaline phosphatase (ALP) in your blood. It is an enzyme found in most tissues, especially in the liver and bones.
The amount of ALP in your blood is measured to help diagnose liver and bone disease. The test may also be used to help check medical treatments that can damage the liver or bones.
A small amount of blood is taken from your arm with a needle. The blood is collected in tubes and sent to a lab.
Having this test will take just a few minutes of your time.
Ask your healthcare provider when and how you will get the result of your test.
In most labs the normal ALP range for adults is 39 to 117 units per liter (U/L). The normal range may vary from lab to lab. Normal ranges are usually shown next to your results in the lab report.
Your ALP may be higher than normal if:
Because many organs in the body contain ALP, it may be important to know where the increased amount of the enzyme in the blood is coming from. Your healthcare provider may order an ALP isoenzyme test. The ALP isoenzyme test measures different types of ALP in the blood. It can find which organ is causing the increased amount of ALP.
Your ALP may be lower than normal if:
Test results are only one part of a larger picture that takes into account your medical history and current health. Sometimes a test needs to be repeated to check the first result. Talk to your healthcare provider about your result and ask questions. Ask if and when you need more tests.