Get answers to your Myelodysplastic Syndromes questions.
Type 5b acid phosphatase test; TRAP test
There should be less than 5 nanograms per milliliter (ng/mL) of TRAP.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The example above shows the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
A high level of TRAP in leukemia cells supports a diagnosis of hairy cell leukemia.
A high level of TRAP in the blood plasma is a sign of bone breakdown. This can be due to many types of diseases, but in a patient with cancer it is likely a sign that the cancer has spread to bone.
Kantarjian H, O’Brien S. The chronic leukemias. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, PA: Saunders Elsevier; 2007:chap 195.
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