Alkaline Phosphatase (ALP)

Adult: 42–136 U/L
Child: 50–230 U/L

. Red-top tube.
■ Enzyme found predominately in the liver, biliary tract, and bone.
■ Useful in assessing liver and bone disease.
■ ALP isoenzymes distinguish between liver and bone disease. ALP1 is
hepatic; ALP2 is from bone.