<prompt> The normal ratio of CD4to CD8 is1:012:018:0110:01  <response>: Ref Robbins 9e p190-191 A normal CD4CD8 ratio is 2.0, with CD4lymphocytes equal to or greater than 400mm3 and CD8 lymphocytes equal to 200 to 800mm3. If your ratio is higher than 2, it means your immune system is strong and you may not have HIV. If your ratio is less than 1, you may have: HIV. 