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
2024年11月11日 · 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
2021年10月5日 · 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
2024年12月28日 · 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 …
2023年7月24日 · CD4 counts measure the number of cells per cubic millimeter of blood (cells/mm 3). A person’s ideal CD4 count can vary according to certain factors, such as age or certain health...
CD4 T Helper Cells: Types and Functions - Verywell Health
2024年12月18日 · 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 Cell Count and HIV - StatPearls - NCBI Bookshelf
2025年1月19日 · 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 count (or T-cell test) - HIV - Veterans Affairs
2020年6月10日 · 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.
CD4 Count - StatPearls - NCBI Bookshelf
CD4 count is a laboratory test that measures CD-4 T lymphocytes (T cells) via flow cytometry. This test is an important parameter in HIV management and is used to guide clinical treatment.