CLT CLT Hematology & Blood Analysis 1 — Questions and Answers
Question 1: Which blood cell type is primarily responsible for oxygen transport throughout the body?
- Platelets
- Erythrocytes (Correct answer)
- Leukocytes
- Basophils
Correct answer: Erythrocytes
Erythrocytes (red blood cells) contain hemoglobin, which binds oxygen and carries it to tissues throughout the body.
Question 2: A patient's CBC shows a hemoglobin of 8.5 g/dL. This finding is most consistent with which condition?
- Polycythemia vera
- Dehydration
- Anemia (Correct answer)
- Leukocytosis
Correct answer: Anemia
A hemoglobin below the normal range (13.5–17.5 g/dL for males, 12–15.5 g/dL for females) indicates anemia.
Question 3: Which stain is most commonly used to differentiate the morphology of blood cells in a peripheral blood smear?
- Gram stain
- Wright-Giemsa stain (Correct answer)
- Ziehl-Neelsen stain
- PAS stain
Correct answer: Wright-Giemsa stain
Wright-Giemsa stain is the standard differential stain used in hematology to identify and differentiate blood cell types on a peripheral smear.
Question 4: What does the Mean Corpuscular Volume (MCV) measure in a CBC?
- Average size of red blood cells (Correct answer)
- Total red blood cell count
- Hemoglobin concentration per cell
- Oxygen saturation of hemoglobin
Correct answer: Average size of red blood cells
MCV measures the average volume (size) of individual red blood cells, expressed in femtoliters (fL), used to classify anemia types.
Question 5: An elevated eosinophil count (eosinophilia) is most commonly associated with which condition?
- Bacterial sepsis
- Viral pneumonia
- Allergic reactions or parasitic infections (Correct answer)
- Iron deficiency anemia
Correct answer: Allergic reactions or parasitic infections
Eosinophilia is classically associated with allergic conditions such as asthma or parasitic infections that trigger an immune response.
Question 6: What is the normal platelet count range for an adult?
- 50,000–100,000/µL
- 150,000–400,000/µL (Correct answer)
- 500,000–750,000/µL
- 1,000–5,000/µL
Correct answer: 150,000–400,000/µL
The normal adult platelet count is 150,000–400,000 per microliter; counts below this are called thrombocytopenia.
CLT CLT Hematology & Blood Analysis 1
Which blood cell type is primarily responsible for oxygen transport throughout the body?