Friday, February, 10, 2012

Leukocyte alkaline phosphatase (LAP)

Table of Contents

Alternative Names

ALP test - leukocytes


Normal Values

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

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.


What abnormal results mean

Higher-than-normal results may be due to:

  • Essential thrombocytosis
  • Leukemoid reaction
  • Myelofibrosis
  • Polycythemia vera

Lower-than-normal results may be due to:

  • Aplastic anemia
  • Chronic myeloid leukemia
  • Pernicious anemia

Review Date: 06/02/2010
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)