Is a CD4:CD8 ratio of 3.4 considered high?

Question

Hi doctor,

My flow cytometry results are as follows:

If there are 38 % lymphocytes, CD3 is 88, and the CD4:CD8 ratio is 3.4, would my calculations for the following be correct?

Absolute CD3: 3,344 cells/µL.
Absolute CD4: 2,584 cells/µL.
Absolute CD8: 760 cells/µL.
CD4: 68 %.
CD8: 20 %.

Does this indicate an excess of mature T cells, specifically CD4 cells?

Please help me.

Thanks.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

Normal ratio: In a healthy individual, the ratio of CD4 to CD8 T cells (CD4/CD8 ratio) is typically greater than 1.

A CD4:CD8 ratio of 3.4 is within the normal range for a healthy individual. The general reference range is between 0.9 and 3.5, although this can vary slightly depending on the laboratory and individual factors.

A CD4 percentage of 68 suggests a relatively healthy immune system, as it is well above the threshold for concern, typically below 14% in individuals with AIDS.

A lymphocyte count of 38% generally falls within the normal range, indicating that the body is responding appropriately to various stimuli, including infections. Lymphocytes, a type of white blood cell, play a crucial role in immune function, and a count within the 20 to 40% range is considered normal.

I hope this answers your questions.

Thank you.