Q: A patient’s CBC shows Hematocrit = 36%, RBC count = 4.0 × 10⁶/µL. Calculate the Mean Corpuscular Volume (MCV) and classify the anemia type based on your result.

MCV = $$\frac{36 \times 10}{4} = 90 fL$$; Normocytic anemia

Q: A CBC report shows Hemoglobin = 12 g/dL, Hematocrit = 36%. Calculate the Mean Corpuscular Hemoglobin Concentration (MCHC) and interpret the result.

MCHC = $$\frac{12 \times 100}{36} = 33.3 g/dL$$; Normochromic

Q: Which formula is used to calculate the absolute neutrophil count (ANC), and what is the clinical significance of an ANC less than 500/µL?

ANC = $$\frac{\text{Neutrophil \%} \times \text{WBC}}{100}$$; Severe neutropenia with high infection risk

Q: A patient’s CBC shows Hemoglobin = 9 g/dL, RBC count = 3 × 10⁶/µL. Calculate the Mean Corpuscular Hemoglobin (MCH) and interpret the result.

MCH = $$\frac{9 \times 10}{3} = 30 pg$$; Normal

Q: A CBC shows WBC = 6 × 10³/µL, Neutrophil % = 10%. Calculate the absolute neutrophil count (ANC) and classify the severity of neutropenia.

ANC = $$\frac{10 \times 6}{100} = 0.6 × 10$$³/µL = 600/µL; Moderate neutropenia

Question 1

A blood sample is centrifuged and separates into three distinct layers. Which layer contains the majority of leukocytes and platelets, and what is its approximate proportion of total blood volume?

Accepted Answer

The buffy coat; less than 1% of blood volume

Question 2

On a Wright–Giemsa–stained peripheral blood smear, which cell type is identified by its biconcave shape, lack of nucleus, and central pallor occupying about one-third of the cell diameter?

Accepted Answer

Erythrocyte

Question 3

A patient’s CBC shows Hematocrit = 36%, RBC count = 4.0 × 10⁶/µL. Calculate the Mean Corpuscular Volume (MCV) and classify the anemia type based on your result.

Accepted Answer

MCV = $$\frac{36 	imes 10}{4} = 90 fL$$; Normocytic anemia

Question 4

Which of the following findings on a peripheral blood smear is most characteristic of sickle cell disease?

Accepted Answer

Crescent-shaped erythrocytes

Question 5

A CBC report shows Hemoglobin = 12 g/dL, Hematocrit = 36%. Calculate the Mean Corpuscular Hemoglobin Concentration (MCHC) and interpret the result.

Accepted Answer

MCHC = $$\frac{12 	imes 100}{36} = 33.3 g/dL$$; Normochromic

Question 6

A patient presents with a platelet count of 18 × 10³/µL. What is the most significant clinical risk associated with this finding?

Accepted Answer

Increased risk of severe bleeding

Question 7

Which formula is used to calculate the absolute neutrophil count (ANC), and what is the clinical significance of an ANC less than 500/µL?

Accepted Answer

ANC = $$\frac{	ext{Neutrophil \%} 	imes 	ext{WBC}}{100}$$; Severe neutropenia with high infection risk

Question 8

A peripheral blood smear shows marked variation in RBC size and shape. Which two terms best describe these findings, and what condition are they commonly associated with?

Accepted Answer

Anisocytosis and poikilocytosis; Seen in severe anemia

Question 9

A patient’s CBC shows Hemoglobin = 9 g/dL, RBC count = 3 × 10⁶/µL. Calculate the Mean Corpuscular Hemoglobin (MCH) and interpret the result.

Accepted Answer

MCH = $$\frac{9 	imes 10}{3} = 30 pg$$; Normal

Question 10

Which of the following is a typical finding in hereditary spherocytosis on a peripheral blood smear?

Accepted Answer

Small, round RBCs with no central pallor

Question 11

A patient with chronic hypoxia is likely to show which of the following changes in their CBC?

Accepted Answer

Erythrocytosis: increased RBC count, hemoglobin, and hematocrit

Question 12

A CBC shows WBC = 6 × 10³/µL, Neutrophil % = 10%. Calculate the absolute neutrophil count (ANC) and classify the severity of neutropenia.

Accepted Answer

ANC = $$\frac{10 	imes 6}{100} = 0.6 × 10$$³/µL = 600/µL; Moderate neutropenia

Question 13

Which of the following is a common cause of thrombocytosis and what is its clinical significance?

Accepted Answer

Reactive conditions (infection, inflammation, iron deficiency); Increased risk of thrombosis

Question 14

A bone marrow slide shows high cellularity, numerous developing erythroid and myeloid precursors, and very large cells with multi-lobed nuclei. What is the function of these large cells?

Accepted Answer

Megakaryocytes; produce platelets

Question 15

A patient’s CBC shows Hematocrit = 27%, Hemoglobin = 9 g/dL, RBC count = 2.7 × 10⁶/µL. Calculate the MCV and MCHC, and classify the anemia.

Accepted Answer

MCV = $$\frac{27 	imes 10}{2.7} = 100 fL$$; MCHC = $$\frac{9 	imes 100}{27} = 33.3 g/dL$$; Macrocytic, normochromic anemia

Question 16

Which of the following is a key feature for identifying reticulocytes on a Wright–Giemsa–stained smear?

Accepted Answer

Slightly larger size and polychromasia

Question 17

A patient with malaria will most likely show which of the following findings on a peripheral blood smear?

Accepted Answer

Intraerythrocytic ring forms

Question 18

Which of the following statements about CBC interpretation is correct?

Accepted Answer

Always calculate indices before interpreting results

Blood Anatomy, Histology, Pathology, and CBC Interpretation: ANP Lab Exam Study Guide

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