Lymphocytes are one of the five types of white blood cells. There are two types of lymphocytes–B cells and T cells. They locate and destroy infected cells and create an immune response to the type of infection or toxin that caused the problem.

A stained lymphocyte surrounded by red blood c...

A stained lymphocyte surrounded by red blood cells viewed using a light microscope. (Photo credit: Wikipedia)


Your doctor may order this test if you have signs of an immunodeficiency disorder or a disease of the lymph nodes. It is also used to monitor how well therapy for these types of diseases is working.
A B-cell leukemia/lymphoma panel is a test that looks for certain proteins on the surface of white blood cells called B-lymphocytes. These proteins serve as markers that may be helpful in diagnosing leukemia or lymphoma. This test may be performed:
When other tests (such as a blood smear) show signs of abnormal white blood cells
When leukemia or lymphoma is suspected
To find out the type of leukemia or lymphoma

NORMAL RESULTS

A stained lymphocyte surrounded by red blood cells viewed using a light microscope. (Photo credit: Wikipedia)
Normally, the percentage of lymphocytes are between 20% to 40%.

HIGHER THAN NORMAL RESULTS

Higher than normal results of the absolute lymphocytes blood test may indicate:
B-Cell lymphocytic leukemiaLymphomaHepatitisInfectious mononucleosis
Multiple myeloma

LOWER THAN NORMAL RESULTS

Lower than normal results of the absolute lymphocytes blood test may indicate:
AIDS
Viral infection
Cancer
Hodgkin’s disease
LeukemiaHIV infection