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Leukocyte alkaline phosphatase (LAP) Score

Also known as:Leukocyte alkaline phosphatase

Why should I do it?
Leukocyte alkaline phosphatase is a test that tells how much of a protein called alkaline phosphatase (ALP) you have inside your white blood cells.

When should I do it?
This test is done to confirm a number of different medical conditions, including certain types of anemia and leukemia. Your doctor may also order this test if you Have An increase in platelet levels in the blood

What Kind of Sample is Needed?
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. In infants or young children, a sharp tool called a lancet may be Used To puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over The area If there is any bleeding.

Test Preparation Needed?
You should not eat or drink for 6 hours before the test. Certain medicines may affect the test results. Your health care provider may tell you to stop taking such Medications. These medications include:
Allopurinol, Androgens, Anti-inflammatory medicines, Birth control pills, Certain antibiotics, Certain arthritis drugs, Certain diabetes drugs (taken by mouth), Chlorpromazine, Cortisone, Methyldopa, Narcotics, Propranolol, Tranquilizers