CD3 CD4 CD8 test is performed on a sample of bone marrow to measure the level of CD3 CD4 CD8 in the bone marrow. It is performed to confirm T cell Lymphoma and also during the treatment and after the treatment of T cell Lymphoma. Also known as IHC Marker CD3 CD4 CD8 Immunohistochemistry Bone Marrow, CD 3 CD 4 CD 8 Count Immunohistochemistry Bone Marrow, CD3 CD4 CD8 Count Immunohistochemistry Bone Marrow.