CD4 Count, HIV, and AIDS: Test and Results and What They Mean - WebMD
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 · CD4 counts show the robustness of the immune system. A healthy immune system normally has a CD4 count ranging from 500 to 1,600 cells per cubic millimeter of blood …
The Stages of HIV Infection | NIH
2021年8月20日 · People with HIV are diagnosed with AIDS if they have a CD4 count of less than 200 cells/mm 3 or if they have certain opportunistic infections. Once a person is diagnosed …
What Are HIV and AIDS? - HIV.gov
2023年7月26日 · A person with HIV is considered to have progressed to AIDS when: the number of their CD4 cells falls below 200 cells per cubic millimeter of blood (200 cells/mm3). (In …
CD4 Cell Count and HIV - StatPearls - NCBI Bookshelf
2025年1月19日 · CD4 counts below 200 cells/mm³ are a defining criterion for an AIDS diagnosis and indicate a significantly elevated risk for life-threatening infections and malignancies. …
HIV/AIDS - Diagnosis and treatment - Mayo Clinic
2024年2月9日 · If you get a diagnosis of HIV/AIDS, tests can help your healthcare professional learn the stage of your disease and the best treatment, including: CD4 T cell count. CD4 T …
What to Know About the CD4:CD8 Ratio Test - WebMD
2024年12月23日 · CD4 and CD8 are two types of white blood cells in your blood. White blood cells help your body fight infections. If you have HIV infection, your doctor may use a …
About HIV | HIV | CDC - Centers for Disease Control and Prevention
2025年1月14日 · HIV is a virus that attacks the body's immune system. The only way to know if you have HIV is to get tested. There are many ways to prevent HIV, like using PrEP, PEP, …
HIV and AIDS: The Basics | NIH - HIVinfo
2024年9月4日 · AIDS is the most advanced stage of HIV infection. HIV attacks and destroys the infection-fighting CD4 cells (CD4 T lymphocyte) of the immune system. The loss of CD4 cells …
HIV Lab Tests and Results - HIV.gov
2024年8月30日 · In contrast, if a person has a CD4 count of fewer than 200/mm3, they are considered to have progressed to stage 3 (AIDS), the most advanced stage of HIV. Why it’s …