BOC: Hematology Questions with Revised
Answers| Verified 100% Correct Latest 2024/2025
update
Which of the following types of polycythemia is a severely burned patient MOST likely to
have - ✔✔Relative polycythemia associated with dehydration
Which of the following is most likely to be seen in lead poisoning - ✔✔Basophilic
stippling
The characteristic morphologic feature in lead poisoning is - ✔✔Basophilic stippling
A 14-year-old boy is seen in the ER complaining of a sore throat, swollen glands and
fatigue. The CBC results are:
WBC: 16.0 x 10³/µL(16.0 x 10⁹/L)
RBC: 4.37 x 10⁶/µL (4.37 x 10¹²/L)
Hgb: 12.8 g/dL (128 g/L)
Hct: 38.4%
Plt: 180 x 10³/µL (180 x 10^9/L)
DIFFERENTIAL:
Absolute neutrophils: 3.9 x 10⁹/L
Absolute lymphs: 6.0 x 10⁹/L
Absolute monos: 0.5 x 10⁹/L
Absolute atypical lymphs: 3.2 x 10⁹/L
,What is the most likely diagnosis - ✔✔Infectious mononucleosis
Which of the following technical factors will cause a decreased erythrocyte
sedimentation rate - ✔✔Small fibrin clots in the sample
Which of the RBC indices is a measure of the amount of hemoglobin in individual red
blood cells - ✔✔MCH
The RDW-CV and RDW-SD performed by automated cells counters are calculations that
provide - ✔✔An index of the distribution of RBC volumes
The erythrocyte sedimentation rate (ESR) can be falsely elevated by - ✔✔Tilting the
tube
Which of the following is the formula for absolute cell count - ✔✔% of cells counted x
total count
The laboratory tests performed on a patient indicate macrocytosis, anemia, leukopenia
and thrombocytopenia. Which fo the following disorders is the patient most likely to
have - ✔✔Vitamin B12 deficiency
The mean value of a reticulocyte count on specimens of cord blood from healthy, full-
term newborns is approximately - ✔✔5.0%
A red blood cell about 5 microm in diameter that stains bright red and shows no central
pallor is a - ✔✔Spherocyte
The following results were obtained on a patients blood
,Hgb: 11.5 g/dL (115 g/L)
Hct: 40%
MCV: 89 µm³ (89 fL)
MCH: 26 pg
MCHC: 29%
Examination of a Wright-stained smear of the same sample would most likely show -
✔✔Normocytic, hypchromic erythrocytes
Evidence of active red cell degeneration may be indicated on a blood smear by -
✔✔Basophilic stippling, nucleated red blood cells and polychromasia
The presence of excessive rouleaux formation on a blood smear is often accompanied
by an increased - ✔✔Sedimentation rate
The characteristic peripheral blood morphologic feature in multiple myeloma is -
✔✔Rouleaux formation
In polycythemia vera, the hemoglobin, hematocritm, red blood cell count and red cell
mass are - ✔✔Elevated
The M:E ratio in polycythemia vera is usually - ✔✔Normal
Many microspherocytes, schistocytes and budding off of spherocytes can be seen on
peripheral blood smears of patients with - ✔✔Extensive burns
, Which of the following is most closely associated with erythroleukemia - ✔✔Rigned
sideroblasts, nuclear budding and Howell-Jolly bodies
The most characteristic peripheral blood smear finding in multiple myeloma is -
✔✔Rouleaux formation of the red cells
The values below were obtained on an automated blood count system performed on a
blood sample from a 25-year-old man:
PATIENT:
WBC: 5.1 x 10³/µL (5.1 x 10⁹/L)
RBC: 2.94 x 10⁶/µL (2.94 x 10¹²/L)
Hgb: 13.8 g/dL (138 g/L)
Hct: 35.4%
MCV: 128 µm³ (128 fL)
MCH: 46.7 pg
MCHC: 40%
NORMAL:
WBC: 5.0-10.0 x 10³/µL
RBC: 4.6-6.2 x 10⁶/µL (4.6-6.2 x 10²/L)
Hgb: 14-18 g/dL (140-180 g/L)
Hct: 40-54%
MCV: 82-90 µm³ (82-90 fL)
MCH: 27-31 pg
MCHC 32-36%
Answers| Verified 100% Correct Latest 2024/2025
update
Which of the following types of polycythemia is a severely burned patient MOST likely to
have - ✔✔Relative polycythemia associated with dehydration
Which of the following is most likely to be seen in lead poisoning - ✔✔Basophilic
stippling
The characteristic morphologic feature in lead poisoning is - ✔✔Basophilic stippling
A 14-year-old boy is seen in the ER complaining of a sore throat, swollen glands and
fatigue. The CBC results are:
WBC: 16.0 x 10³/µL(16.0 x 10⁹/L)
RBC: 4.37 x 10⁶/µL (4.37 x 10¹²/L)
Hgb: 12.8 g/dL (128 g/L)
Hct: 38.4%
Plt: 180 x 10³/µL (180 x 10^9/L)
DIFFERENTIAL:
Absolute neutrophils: 3.9 x 10⁹/L
Absolute lymphs: 6.0 x 10⁹/L
Absolute monos: 0.5 x 10⁹/L
Absolute atypical lymphs: 3.2 x 10⁹/L
,What is the most likely diagnosis - ✔✔Infectious mononucleosis
Which of the following technical factors will cause a decreased erythrocyte
sedimentation rate - ✔✔Small fibrin clots in the sample
Which of the RBC indices is a measure of the amount of hemoglobin in individual red
blood cells - ✔✔MCH
The RDW-CV and RDW-SD performed by automated cells counters are calculations that
provide - ✔✔An index of the distribution of RBC volumes
The erythrocyte sedimentation rate (ESR) can be falsely elevated by - ✔✔Tilting the
tube
Which of the following is the formula for absolute cell count - ✔✔% of cells counted x
total count
The laboratory tests performed on a patient indicate macrocytosis, anemia, leukopenia
and thrombocytopenia. Which fo the following disorders is the patient most likely to
have - ✔✔Vitamin B12 deficiency
The mean value of a reticulocyte count on specimens of cord blood from healthy, full-
term newborns is approximately - ✔✔5.0%
A red blood cell about 5 microm in diameter that stains bright red and shows no central
pallor is a - ✔✔Spherocyte
The following results were obtained on a patients blood
,Hgb: 11.5 g/dL (115 g/L)
Hct: 40%
MCV: 89 µm³ (89 fL)
MCH: 26 pg
MCHC: 29%
Examination of a Wright-stained smear of the same sample would most likely show -
✔✔Normocytic, hypchromic erythrocytes
Evidence of active red cell degeneration may be indicated on a blood smear by -
✔✔Basophilic stippling, nucleated red blood cells and polychromasia
The presence of excessive rouleaux formation on a blood smear is often accompanied
by an increased - ✔✔Sedimentation rate
The characteristic peripheral blood morphologic feature in multiple myeloma is -
✔✔Rouleaux formation
In polycythemia vera, the hemoglobin, hematocritm, red blood cell count and red cell
mass are - ✔✔Elevated
The M:E ratio in polycythemia vera is usually - ✔✔Normal
Many microspherocytes, schistocytes and budding off of spherocytes can be seen on
peripheral blood smears of patients with - ✔✔Extensive burns
, Which of the following is most closely associated with erythroleukemia - ✔✔Rigned
sideroblasts, nuclear budding and Howell-Jolly bodies
The most characteristic peripheral blood smear finding in multiple myeloma is -
✔✔Rouleaux formation of the red cells
The values below were obtained on an automated blood count system performed on a
blood sample from a 25-year-old man:
PATIENT:
WBC: 5.1 x 10³/µL (5.1 x 10⁹/L)
RBC: 2.94 x 10⁶/µL (2.94 x 10¹²/L)
Hgb: 13.8 g/dL (138 g/L)
Hct: 35.4%
MCV: 128 µm³ (128 fL)
MCH: 46.7 pg
MCHC: 40%
NORMAL:
WBC: 5.0-10.0 x 10³/µL
RBC: 4.6-6.2 x 10⁶/µL (4.6-6.2 x 10²/L)
Hgb: 14-18 g/dL (140-180 g/L)
Hct: 40-54%
MCV: 82-90 µm³ (82-90 fL)
MCH: 27-31 pg
MCHC 32-36%
