Measuring CD4 T-cells is important in helping healthcare providers determine the stage and possible complications of HIV infection. While they are no longer used to determine when HIV therapy should ...

A panelist discusses how CD4 counts serve as measures of immune system status that typically increase by about 200 in the first year of antiretroviral therapy. Although there can be laboratory ...

We assessed the risk of acquired immunodeficiency syndrome (AIDS)-related opportunistic illness or death among persons first prescribed highly active antiretroviral therapy (HAART) in January 1996 or ...

CD4+ T cells, or helper T cells, are one type of lymphocyte that helps coordinate the immune response against infection and disease. They interact and activate other cells in the immune system. The ...

What Is the CD4:CD8 Ratio Test Used For? 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 ...