What is a normal T-cell count in adults? Normal Results
In adults, a normal CD4 cell count ranges from 500 to 1,200 cells/mm3 (0.64 to 1.18 × 109/L). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.
What is a normal T-cell count percentage? The normal range is anywhere from about 25% to 65%.
How many T cells are there in a person? An adult human has a population of approximately 1011 naive T cells circulating in the peripheral lymphoid organs and blood.
When someone’s T-cell count is 200 or less? When the amount of helper T cells falls below 200 cells/mm3 (cells per cubic millimeter), a person may receive an AIDS diagnosis. But healthcare professionals will also take into account other variables such as overall white blood cell count and the percentage of lymphocytes. AIDS is the most severe stage of HIV.