The normal ratio of CD4to CD8 is: (A) 1:01, (B) 2:01, (C) 8:01, (D) 10:01
Answer is B. Ref Robbins 9/e p190-191 A normal CD4/CD8 ratio is 2.0, with CD4lymphocytes equal to or greater than 400/mm3 and CD8 lymphocytes equal to 200 to 800/mm3. 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.