How is CD4 count measured?

CD4 count (or T-cell count) CD4 cell counts are obtained from bloodwork as part of laboratory monitoring for HIV infection. CD4+ cell counts are usually measured when you are diagnosed with HIV (at baseline), every 3 to 6 months during first 2 years or until your CD4 count increases above 300 cells/mm3.

How do I know if I have CD4?

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 (WBC). They play a key role in the immune system. They alert other immune cells to the presence of infections such as bacteria and other viruses in the body.

What is a normal persons CD4 count?

A CD4 count is typically reported as a count of cells (expressed as cells per cubic millimeter of blood). Sometimes results are expressed as a percent of total lymphocytes (CD4 percent). A normal CD4 count ranges from 500–1,200 cells/mm3 in adults and teens.