CD4+ T-cell counts

 CD4+ T-cell counts help Monitors the progression of HIV. As the condition progresses, usually the number of CD4+ T-cells decreases, with a resultant decrease in immunity. In general, the immune system remains healthy with CD4+ T-cell counts higher than 500 cells/L. Immune system problems occur when the CD4+ T-cell count is between 200 and 499 cells/L. Severe immune system problems occur when the CD4+ T-cell count is lower than 200 cells/L.

Normal Lab Value for  CD4+ T-cell:

• Normal: 500 to 1600 cells/L.
• Severe: Less than 200 cells/L
• CD4-to-CD8 ratio: 2:1