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Leukocyte alkaline phosphatase (LAP)

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Leukocyte alkaline phosphatase (LAP)

Normal Values:

A staining score of 20 to 100 (out of a maximum of 400) is considered normal.

What abnormal results mean:

LAP is usually higher-than-normal with:

LAP may be normal or higher-than-normal with:

Leukemoid reaction to infection
Women on oral contraceptives

LAP is usually lower-than-normal with chronic granulocytic leukemia.

LAP may be lower-than-normal with decreased bone marrow activity:

Primary thrombocythemia is an additional condition under which the test may be performed.

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