CD4 cells https://www.hiv.va.gov/patient/diagnosis/labs-CD4-count.asp 500 and 1,500 T-cells count the T cells in his or her blood HIV virus HIV virus https://www.hiv.va.gov/patient/diagnosis/labs-CD4-count.asp CD4 counts count the T cells in his or her blood there are only 200 CD4 T cells https://www.hiv.va.gov/patient/diagnosis/labs-CD4-count.asp CD4 cells CD4 cells count the T cells in his or her blood CD4 cells CD4 cell count CD4 count CD4 cells HIV virus the immune system is functioning HIV/AIDS: CD4 count (or T-cell count) HIV virus CD4 cells CD4 cells count the T cells in his or her blood va.gov/patient/diagnosis/labs-CD4-count.asp CD4 cells 500 og 1500 CD4 cell count