1. Which of the following is NOT a component of a complete blood count

(CBC)?

A. Hemoglobin

B. Platelet count

C. White blood cell count

D. Creatinine

Answer: D. Creatinine

Rationale: A complete blood count typically includes the measurement of

hemoglobin, platelet count, and white blood cell count. Creatinine is a

marker of kidney function, not part of a CBC.

2. Which of the following is a characteristic of leukemia?

A. Decreased red blood cell count

B. Increased platelet count

C. Presence of blast cells in the blood

D. Elevated lymphocyte count

Answer: C. Presence of blast cells in the blood

Rationale: Leukemia is characterized by the presence of blast cells in the

blood, which are immature white blood cells. This can lead to a decrease in

the number of normal blood cells.

3. A patient presents with a microcytic, hypochromic anemia. Which of the

following conditions would be most likely to cause this type of anemia?

A. Iron-deficiency anemia

B. Sickle cell anemia

C. Thalassemia

D. Vitamin B12 deficiency anemia

Answer: A. Iron-deficiency anemia

Rationale: Iron-deficiency anemia is characterized by small, pale red blood