Viral Load - CD4 White Blood Cells

CD4 White Blood Cells

CD4 cells are the primary target of HIV. A CD4 test quantifies helper T-cells and is often combined with viral load testing to monitor the progression of HIV. CD4 testing shows the strength of the immune system, but does not report viral activity. As established by the Centers for Disease Control and Prevention (CDC), a person with HIV and a CD4 count below 200 or a CD4 percentage below 14% is considered to have AIDS. An increased CD4 count can result from an immune response to an infection or a recent vaccination. A decreased CD4 count, in combination with higher numbers on a viral load test, indicates an increased risk of getting sick from opportunistic diseases.

Read more about this topic:  Viral Load

Famous quotes containing the words white, blood and/or cells:

    ...there was the annual Fourth of July picketing at Independence Hall in Philadelphia. ...I thought it was ridiculous to have to go there in a skirt. But I did it anyway because it was something that might possibly have an effect. I remember walking around in my little white blouse and skirt and tourists standing there eating their ice cream cones and watching us like the zoo had opened.
    Martha Shelley, U.S. author and social activist. As quoted in Making History, part 3, by Eric Marcus (1992)

    I was born upon thy bank, river,
    My blood flows in thy stream,
    And thou meanderest forever
    At the bottom of my dream.
    Henry David Thoreau (1817–1862)

    If I’d written all the truth I knew for the past ten years, about 600 people—including me—would be rotting in prison cells from Rio to Seattle today. Absolute truth is a very rare and dangerous commodity in the context of professional journalism.
    Hunter S. Thompson (b. 1939)