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 - Wikipedia
In molecular biology, CD4 (cluster of differentiation 4) is a glycoprotein that serves as a co-receptor for the T-cell receptor (TCR). CD4 is found on the surface of immune cells such as helper T cells, …
CD4 Count: Normal Range, vs. Viral Load, and What it Means for People
Aug 12, 2025 · For people with HIV, CD4 count and viral load are important indicators of health status. Learn what they measure and how they affect HIV treatment plans.
CD4 Lymphocyte Count: MedlinePlus Medical Test
What is a CD4 count? A CD4 count is a blood test that measures the number of CD4 cells in a sample of your blood. CD4 cells are a type of white blood cell that circulates throughout the body in the blood. …
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 · Your CD4 count should go up if your ART is effective. Keeping your CD4 count up with ART can hold off symptoms and complications of HIV and help you live longer.
CD4+ Count Test - Kaiser Permanente
Sep 25, 2025 · A CD4+ count is a blood test to see how well the immune system is working in people who have been diagnosed with HIV. CD4+ cells are a type of white blood cell.
What Are CD4+ Cells and Why Is the Count Important?
Jul 28, 2025 · CD4+ cells are a specific type of white blood cell, also known as T lymphocytes, that play a central role in the body’s immune system. Often called “helper T cells,” they coordinate immune …
CD4 + T Cells: Differentiation and Functions - PMC
CD4 + T cells are crucial in achieving a regulated effective immune response to pathogens. Naive CD4 + T cells are activated after interaction with antigen-MHC complex and differentiate into specific …
CD4 count blood test: What it is and what to expect - Medical News …
Jul 24, 2023 · Learn about what a CD4 count blood test can tell about a person's health. This article also looks at what to expect from CD4 count blood tests and more.