Cotton or a bandage may be applied to the puncture site if there is any continued bleeding. Fast for 6 hours. The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing .
Alkaline phosphatase is an enzyme in all tissues.
Tissues with particularly high concentrations include liver, bile ducts, and bone cells. There are multiple varieties of ALP, called isoenzymes, with slightly different structures. Since damaged or diseased tissue releases enzymes into the blood, serum ALP measurements can differentiate bone disease from liver disease . This test is usually performed as part of the Chem-20 test. Veins and arteries vary in size from one patient to another and from one side of the body to the other.