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Leukocyte Alkaline Phosphatase Stain (LAP)

Optimizing Laboratory Testing for Hematologic
Disorders Series

High LAP Scores* Do Not Indicate Myeloid Malignancy: A Mayo 1-Year Experience

Slide 16

September 2010

In addition, a high LAP score did not always indicate a myeloid malignancy or even an infectious process. As you can see, there were a variety of non-malignant, non-infectious etiologies that were associated with a high LAP score, again pointing out the lack of diagnostic specificity of a high LAP score.

Myeloid Malignancy


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