ALP (alkaline phosphatase) isoenzyme

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Blood test

Overview Risks Results

ALP (alkaline phosphatase) isoenzyme

• excessive bleeding
• fainting or feeling light-headed
• hematoma (blood accumulating under the skin)
• infection (a slight risk any time the skin is broken)
• multiple punctures to locate veins

This test is about 80% accurate for identifying specific locations of cancers or disease. It should not be relied on for a screening test because sometimes levels are high for unknown reasons and return to normal. Unless there is evidence of a disease, higher-than-normal values of alkaline phosphatase in the Chem-20 test are not considered significant.

Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

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