Question

Which is the correct sequence of arrangement of types of WBC in decreasing order in terms of number per $m{m}^3$ of human blood?

• A. Eosinophils > basophils > neutrophils
• B. Basophils > eosinophils > neutrophils
• C. Neutrophils > eosinophils > basophils
• D. Eosinophils > neutrophils > basophils

Answer 1

The correct option is C Neutrophils > eosinophils > basophils

The normal values of differential WBCs are as follows:
Neutrophils: 3,000 - 7,000/mm${}^3$ (60-70%)
Eosinophils: 50 - 400mm${}^3$ (1-3%)
Basophils: 25 - 200/mm${}^3$ (0.3-0.5%)
Lymphocytes: 1,000 - 4,000/mm${}^3$ (20-30%)
Monocytes: 100 - 600/mm${}^3$ (3-8%)
As per these values, the highest is the neutrophils while the lowest is the basophils in the given options.

Thus, the correct answer is option C.