What is the normal value of CD3CD8?

The reference ranges for normal CD3 and CD8 levels are 955–2860/μL and 320–1250/μL, respectively.

CD3 and CD8 are two important cell types in the human immune system. CD3 is a marker for T lymphocytes; in adults, CD3+ T lymphocytes account for 60%–80% of total peripheral blood lymphocytes, with a normal range of 955–2860 cells/μL. CD8 is a marker for cytotoxic T lymphocytes; in adults, CD8+ T lymphocytes constitute 20%–40% of total peripheral blood lymphocytes, with a normal range of 320–1250 cells/μL. The CD4/CD8 ratio, which ranges from 1.00 to 2.87, is a sensitive indicator for assessing immune system dysfunction. T lymphocytes show positivity in the range of 19%–48%.

It should be noted that testing methods and standards may vary slightly among different laboratories, so the specific normal reference ranges might differ. If testing for CD3 and CD8 is required, it is recommended to do so under medical supervision and interpret the results according to the reference ranges provided by the laboratory.