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, monocytes, macrophages, and dendritic cells.
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 vs. Viral Load: What’s in a Number? - Healthline
Oct 5, 2021 · What is a CD4 count? A CD4 count is a blood test to check the amount of CD4 cells in the body. CD4 cells are a type of white blood cell. They play a key role in the immune system. They...
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. They're also called CD4 T lymphocytes or "helper T cells."
Understanding Absolute CD4 Count and CD4 Percentage
Dec 28, 2024 · The absolute CD4 count and CD4 percentage give your healthcare provider a snapshot of the health of your immune system, as well as the prognosis of your disease moving forward. In its simplest form, we know that CD4 counts of less than 200 places a person with HIV at risk of opportunistic infections .
CD4 count blood test: What it is and what to expect - Medical …
Jul 24, 2023 · A CD4 count measures how many CD4 cells are in a person’s blood. CD4 cells help fight infections. A CD4 count can check how well a person’s immune system is working.
CD4 Cell Count and HIV - StatPearls - NCBI Bookshelf
Jan 19, 2025 · CD4 cell count is a laboratory test that measures the number of CD4 T cells. The normal range is between 500 to 1500 cells/mm 3 . Clinicians use this test to monitor the destruction of CD4 cells, and it also monitors the effectiveness of antiretroviral therapy.
CD4 T Helper Cells: Types and Functions - Verywell Health
Dec 18, 2024 · What Are CD4 T Helper Cells and Why Are They Important? CD4 T helper cells are a type of white blood cell called a lymphocyte that serves an important role in your immune system. These cells help defend the body against infection by directing other "killer" cells to neutralize foreign agents.
CD4 count (or T-cell test) - HIV - Veterans Affairs
Jun 10, 2020 · CD4 cell count is an indicator of immune function in patients living with HIV and one of the key determinants for the need of opportunistic infection (OI) prophylaxis. CD4 cell counts are obtained from bloodwork as part of laboratory monitoring for HIV infection.
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.