CD19

Description

The CD19 test measures the levels of B-lymphocytes in the blood. CD19 is a surface marker specific to B cells, which are crucial components of the adaptive immune system responsible for antibody production. This test is important for assessing humoral immunity and is often used in the diagnosis and monitoring of various immunological disorders. It’s particularly useful in evaluating B-cell lymphomas, leukemias, and immunodeficiencies affecting B cells. The CD19 count can help in monitoring the effectiveness of treatments targeting B cells, such as in certain autoimmune diseases or B-cell malignancies. Abnormal CD19 levels can indicate immune system dysfunctions, certain types of cancers, or the effects of immunosuppressive therapies.