CD4 - Wikipedia
Image of CD4 co-receptor binding to MHC (Major Histocompatibility Complex) non-polymorphic region. In molecular biology, CD4 (cluster of differentiation 4) is a glycoprotein that serves as a …
CD4 Count: Normal Range, vs. Viral Load, and What it Means for …
Jul 18, 2013 · What is a CD4 count? A CD4 count is a blood test to check the number of CD4 cells in the body. CD4 cells are a type of white blood cell. They play a key role in the immune …
CD4 Cell Count (T-Cell Test): Results & Normal Range
Apr 15, 2025 · A CD4 count tells a provider how many T-cells are in a small amount of blood. Providers use the results to stage HIV infections and monitor antiretroviral therapy.
CD4 T Helper Cells: Types and Functions - Verywell Health
Dec 16, 2025 · CD4 T helper cells are crucial because they trigger the body's immune response to fight off infections and diseases.
CD4 Count, HIV, and AIDS: Test and Results and What They Mean
Nov 11, 2024 · The CD4 count is a test that measures how strong your immune system is. Find out how it helps your doctor make HIV and AIDS treatment decisions.
CD4 Lymphocyte Count: MedlinePlus Medical Test
CD4 cells are a type of white blood cell that circulates throughout the body in the blood. They're also called CD4 T lymphocytes or "helper T cells." That's because they help fight infection by …
Understanding CD4 T-Cell Count: Test, Range, and Importance
Learn about CD4 T-cell count, its role in immune health, normal ranges, and its significance in HIV monitoring. Understand CD4 count tests, low CD4 symptoms, and treatment insights.
What Do CD4 T Cells Do in the Immune System? - Biology Insights
Jul 25, 2025 · CD4 T cells are a type of white blood cell (lymphocytes) that play a role in the adaptive immune system. These cells are part of the body’s defense mechanisms, identifying …
CD4+ Count Test - Kaiser Permanente
Sep 25, 2025 · CD4+ cells are a type of white blood cell. White blood cells are important in fighting infections. CD4+ cells are also called T-lymphocytes, T-cells, or T-helper cells. HIV …
CD4 Test - Purpose, Results, Normal Range, and more
The CD4 test is a vital blood test used to measure the number of CD4 T-lymphocytes (CD4 cells) in the body. CD4 cells are a type of white blood cell essential for immune system function. …