Does anyone know where to get this test without having to go through an uncooperative doctor, such as online. Also, does it go by any other names then the ones mentioned below. There are some online lab testing sites that will order blood test for a person, but I am having a difficult time finding the right name. Any ideas? Please and thank you. Here is some information I found online: A B and T cell screen is a laboratory test to determine the amount of T and B cells (lymphocytes) in the blood. Names the test may go by: Direct immunofluorescence; E-rosetting; T and B lymphocyte assays; B and T lymphocyte assays After the blood is drawn it goes through a two-step process. First, the lymphocytes are separated from other blood parts. Once the cells are separated, identifiers are added to distinguish between T and B cells. The E-rosetting test identifies T cells and direct immunofluorescence is used to identify B cells. Tell your health care provider if you have had any of the following, which might affect your T and B cell count: Chemotherapy HIV Radiation therapy Recent or current infection Steroid therapy Stress Surgery Your doctor may order this test if you have signs of certain diseases that weaken the immune system. It may also be used to distinguish between cancerous and noncancerous disease, especially cancers that involve the blood and bone marrow. The test may also be used to determine how well treatment for certain conditions is working. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results. Abnormal T and B cell counts suggest a possible disease. Further testing is needed to confirm a diagnosis. An increased T cell count may be due to: Acute lymphoblastic leukemia Chronic lymphocytic leukemia Infectious mononucleosis Multiple myeloma Syphilis Toxoplasmosis Tuberculosis An increased B cell count may be due to: Chronic lymphocytic leukemia DiGeorge syndrome Multiple myeloma Waldenstrom's macroglobulinemia A decreased T cell count may be due to: Congenital T-cell deficiency disease o Nezelof syndrome o DiGeorge syndrome o Wiskott-Aldrich syndrome Acquired T-cell deficiency states o HIV infection o HTLV-1 infection B cell proliferative disorders o Chronic lymphocytic leukemia o Waldenstrom's macroglobulinemia A decreased B cell count may be due to: Acquired immunodeficiency syndrome Acute lymphoblastic leukemia Congenital immunoglobulin deficiency disorders Acquired immunoglobulin deficiency disorders I hope that is better. I took out some things that didn't seem relevant.