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NCCN Guidelines for Patients


Mycosis Fungoides, Version 1.2016


Treatment planning

Blood tests

Blood tests

In Part 1, blood tests that may be useful for diagnosis

are explained. In brief, your blood may be tested

for Sézary cells if the skin biopsy is not clear. Also,

flow cytometry may be used to assess for surface

proteins common to Sézary cells. PCR to test for TCR

rearrangements in blood cells may also be done. If

these blood tests weren’t done for diagnosis, they are

advised for treatment planning. Other common blood

tests for mycosis fungoides are:

Complete blood count







ount) measures the number

of blood cells in a blood sample. It includes numbers

of white blood cells, red blood cells, and platelets.

Your blood counts may be low or high because of

cancer or another health problem. It is an essential

test that gives a picture of your overall health.

Comprehensive metabolic panel

Chemicals in your blood come from your liver, bone,

and other organs. A comprehensive metabolic panel

often includes tests for up to 14 chemicals. The tests

show if the level of chemicals is too low or high.

Abnormal levels can be caused by cancer or other

health problems.

Lactate dehydrogenase

Lactate dehydrogenase is a protein that is in most

cells. It gets into your blood when a cell is damaged.

Thus, a high level of lactate dehydrogenase is a sign

of cell damage. High levels can be caused by cancer

or other health problems. If related to cancer, high

levels may be a sign that the cancer is widespread.