Conditions of withdrawal

Venous blood sampling (usually at the bend of the elbow), with the tourniquet left for as short a time as possible The sampling tube may contain an anticoagulant It is not essential to be fasting,

Interest of the dosage

Alkaline phosphatases are enzymes present throughout the body but mostly in the liver, bone, intestine, kidneys and white blood cells. Its dosage is of interest in liver, bone and certain cancers.

Normal values ​​


Physiological and pathological variations



90 - 450 IU / l


40 - 100 IU / l

> 60 years

50 - 130 IU / l