LOUISIANA MEDICAL LABORATORY TECHNICIAN
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2027 |INSTANT
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1. Which type of specimen is most commonly used for a
complete blood count (CBC)?
A. Serum
B. Plasma
C. Whole blood
D. Urine
Rationale: A CBC requires intact blood cells for analysis, so
whole blood collected with an anticoagulant is used.
Correct answer: C. Whole blood
2. Which anticoagulant is routinely used for a CBC?
A. Sodium citrate
B. EDTA
C. Heparin
D. Sodium fluoride
Rationale: EDTA preserves cellular morphology and prevents
clotting by chelating calcium.
Correct answer: B. EDTA
3. What is the primary function of red blood cells?
A. Produce antibodies
B. Transport oxygen
,C. Destroy bacteria
D. Initiate clot formation
Rationale: Red blood cells contain hemoglobin, which
transports oxygen from the lungs to tissues.
Correct answer: B. Transport oxygen
4. Which white blood cell is normally the most abundant in
peripheral blood?
A. Basophil
B. Eosinophil
C. Lymphocyte
D. Neutrophil
Rationale: Neutrophils generally constitute the largest
proportion of circulating leukocytes in healthy adults.
Correct answer: D. Neutrophil
5. Which blood component is primarily responsible for clot
formation?
A. Erythrocytes
B. Platelets
C. Lymphocytes
D. Albumin
Rationale: Platelets aggregate at sites of vascular injury and
participate in primary hemostasis.
Correct answer: B. Platelets
6. Which red blood cell morphology describes cells that are
smaller than normal?
,A. Macrocytic
B. Microcytic
C. Normocytic
D. Polychromatic
Rationale: Microcytes are red blood cells that are smaller than
the normal reference size.
Correct answer: B. Microcytic
7. Which stain is commonly used for a peripheral blood
smear?
A. Gram stain
B. Wright-Giemsa stain
C. Ziehl-Neelsen stain
D. India ink
Rationale: Wright-Giemsa staining provides differential
coloration of blood cells and their structures.
Correct answer: B. Wright-Giemsa stain
8. What does hemoglobin primarily transport?
A. Calcium
B. Oxygen
C. Glucose
D. Urea
Rationale: Hemoglobin binds oxygen in the lungs and releases
it to tissues.
Correct answer: B. Oxygen
, 9. Which cell is normally the largest leukocyte in peripheral
blood?
A. Neutrophil
B. Lymphocyte
C. Monocyte
D. Basophil
Rationale: Monocytes are typically the largest normal
leukocytes found in peripheral blood.
Correct answer: C. Monocyte
10. An increased number of eosinophils is commonly
associated with:
A. Parasitic infections and allergies
B. Iron deficiency only
C. Viral hepatitis only
D. Dehydration
Rationale: Eosinophilia commonly occurs with allergic disorders
and certain parasitic infections.
Correct answer: A. Parasitic infections and allergies
11. Which laboratory section primarily examines blood cells?
A. Hematology
B. Chemistry
C. Microbiology
D. Immunology
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2027 |INSTANT
DOWNLOAD PDF
1. Which type of specimen is most commonly used for a
complete blood count (CBC)?
A. Serum
B. Plasma
C. Whole blood
D. Urine
Rationale: A CBC requires intact blood cells for analysis, so
whole blood collected with an anticoagulant is used.
Correct answer: C. Whole blood
2. Which anticoagulant is routinely used for a CBC?
A. Sodium citrate
B. EDTA
C. Heparin
D. Sodium fluoride
Rationale: EDTA preserves cellular morphology and prevents
clotting by chelating calcium.
Correct answer: B. EDTA
3. What is the primary function of red blood cells?
A. Produce antibodies
B. Transport oxygen
,C. Destroy bacteria
D. Initiate clot formation
Rationale: Red blood cells contain hemoglobin, which
transports oxygen from the lungs to tissues.
Correct answer: B. Transport oxygen
4. Which white blood cell is normally the most abundant in
peripheral blood?
A. Basophil
B. Eosinophil
C. Lymphocyte
D. Neutrophil
Rationale: Neutrophils generally constitute the largest
proportion of circulating leukocytes in healthy adults.
Correct answer: D. Neutrophil
5. Which blood component is primarily responsible for clot
formation?
A. Erythrocytes
B. Platelets
C. Lymphocytes
D. Albumin
Rationale: Platelets aggregate at sites of vascular injury and
participate in primary hemostasis.
Correct answer: B. Platelets
6. Which red blood cell morphology describes cells that are
smaller than normal?
,A. Macrocytic
B. Microcytic
C. Normocytic
D. Polychromatic
Rationale: Microcytes are red blood cells that are smaller than
the normal reference size.
Correct answer: B. Microcytic
7. Which stain is commonly used for a peripheral blood
smear?
A. Gram stain
B. Wright-Giemsa stain
C. Ziehl-Neelsen stain
D. India ink
Rationale: Wright-Giemsa staining provides differential
coloration of blood cells and their structures.
Correct answer: B. Wright-Giemsa stain
8. What does hemoglobin primarily transport?
A. Calcium
B. Oxygen
C. Glucose
D. Urea
Rationale: Hemoglobin binds oxygen in the lungs and releases
it to tissues.
Correct answer: B. Oxygen
, 9. Which cell is normally the largest leukocyte in peripheral
blood?
A. Neutrophil
B. Lymphocyte
C. Monocyte
D. Basophil
Rationale: Monocytes are typically the largest normal
leukocytes found in peripheral blood.
Correct answer: C. Monocyte
10. An increased number of eosinophils is commonly
associated with:
A. Parasitic infections and allergies
B. Iron deficiency only
C. Viral hepatitis only
D. Dehydration
Rationale: Eosinophilia commonly occurs with allergic disorders
and certain parasitic infections.
Correct answer: A. Parasitic infections and allergies
11. Which laboratory section primarily examines blood cells?
A. Hematology
B. Chemistry
C. Microbiology
D. Immunology
