CD19 (B Cells) (%) details
What CD19 (B Cells) (%) shows
B cells are a type of lymphocyte, a white blood cell, that develop into cells that make antibodies. CD19 is a marker found on the surface of B cells, and this test uses flow cytometry to count cells carrying it. This value gives B cells as a percentage of all your lymphocytes, while an absolute count gives their number per volume of blood. It helps look at immune function, for example when frequent infections or an immune deficiency are suspected, or when monitoring treatments that target B cells. A low percentage can point to reduced B cell numbers, and a high one can occur with some blood disorders. Results are read with the absolute count and other lymphocyte subsets.
Tests that include CD19 (B Cells) (%)
T-lymphocyte count assists in evaluating cellular immunocompetency.
- CD4/CD8 Ratio Compares two types of immune T-cells. Used to assess immune system balance, especially in HIV monitoring and some autoimmune or infectious conditions.
- Absolute CD19+ Cells Counts the number of CD19+ B cells per volume of blood, the immune cells that make antibodies, used to assess immune system health.
- Absolute CD3+ Cells Counts the number of CD3+ T cells per volume of blood, the main immune cells that direct and carry out immune responses, to assess immune health.
- Absolute CD4+ Cells Counts CD4 'helper' T-cells, a key part of your immune system. Widely used to monitor immune health in HIV and other immune conditions.
- Absolute CD8+ Cells Counts CD8 'cytotoxic' T-cells, immune cells that help destroy infected or abnormal cells. Used to assess immune status.
- CD19 (B Cells) (%) Shows CD19-positive B cells as a percentage of your lymphocytes, helping assess the antibody-producing part of your immune system.
- Mature T Cells (CD3) (%) Shows CD3-positive mature T cells as a percentage of your lymphocytes, helping assess the T cell part of your immune system.
- CD4 (%) The percentage of your lymphocytes that are CD4 helper T-cells, used alongside the absolute CD4 count to assess immune function.
- CD8 (%) The percentage of your lymphocytes that are CD8 cytotoxic T-cells, used alongside the absolute count to assess immune function.
- Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
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