Maryland Clinical Laboratory Technician
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
Pdf
1. Which agency is primarily responsible for enforcing workplace safety
standards in clinical laboratories in the United States?
A. CDC
B. FDA
C. OSHA
D. CMS
Rationale: OSHA establishes and enforces workplace safety regulations,
including standards related to chemical hazards, bloodborne pathogens,
and personal protective equipment in laboratories.
2. A blood specimen collected in a lavender-top tube is primarily used for
which laboratory department?
A. Chemistry
B. Microbiology
C. Blood Bank
D. Hematology
,Rationale: Lavender-top tubes contain EDTA, which preserves cellular
components and is commonly used for complete blood counts and other
hematology tests.
3. Which laboratory value is most directly used to assess long-term
glucose control?
A. Fasting glucose
B. Oral glucose tolerance test
C. Hemoglobin A1c
D. Random glucose
Rationale: Hemoglobin A1c reflects average blood glucose levels over
approximately the previous two to three months.
4. What is the primary function of red blood cells?
A. Produce antibodies
B. Form blood clots
C. Fight infection
D. Transport oxygen
Rationale: Red blood cells contain hemoglobin, which carries oxygen from
the lungs to body tissues.
5. Which microorganism classification stains purple during Gram
staining?
A. Acid-fast bacteria
B. Gram-negative bacteria
C. Fungi
D. Gram-positive bacteria
Rationale: Gram-positive bacteria retain crystal violet stain due to their
thick peptidoglycan cell wall structure.
, 6. A urine specimen should ideally be analyzed within:
A. 12 hours at room temperature
B. 24 hours at room temperature
C. 2 hours of collection
D. 48 hours of collection
Rationale: Urine undergoes chemical and cellular changes after collection,
making prompt analysis important for accurate results.
7. Which anticoagulant is commonly used for coagulation studies?
A. EDTA
B. Heparin
C. Potassium oxalate
D. Sodium citrate
Rationale: Sodium citrate preserves clotting factors by reversibly binding
calcium and is used for coagulation testing.
8. The universal precautions concept assumes that:
A. Only visibly contaminated specimens are infectious
B. Only blood is infectious
C. Healthy patients pose no risk
D. All human specimens may contain infectious agents
Rationale: Universal precautions require treating all specimens as
potentially infectious to minimize exposure risks.
9. Which white blood cell is most commonly elevated during bacterial
infections?
A. Eosinophil
B. Basophil
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which agency is primarily responsible for enforcing workplace safety
standards in clinical laboratories in the United States?
A. CDC
B. FDA
C. OSHA
D. CMS
Rationale: OSHA establishes and enforces workplace safety regulations,
including standards related to chemical hazards, bloodborne pathogens,
and personal protective equipment in laboratories.
2. A blood specimen collected in a lavender-top tube is primarily used for
which laboratory department?
A. Chemistry
B. Microbiology
C. Blood Bank
D. Hematology
,Rationale: Lavender-top tubes contain EDTA, which preserves cellular
components and is commonly used for complete blood counts and other
hematology tests.
3. Which laboratory value is most directly used to assess long-term
glucose control?
A. Fasting glucose
B. Oral glucose tolerance test
C. Hemoglobin A1c
D. Random glucose
Rationale: Hemoglobin A1c reflects average blood glucose levels over
approximately the previous two to three months.
4. What is the primary function of red blood cells?
A. Produce antibodies
B. Form blood clots
C. Fight infection
D. Transport oxygen
Rationale: Red blood cells contain hemoglobin, which carries oxygen from
the lungs to body tissues.
5. Which microorganism classification stains purple during Gram
staining?
A. Acid-fast bacteria
B. Gram-negative bacteria
C. Fungi
D. Gram-positive bacteria
Rationale: Gram-positive bacteria retain crystal violet stain due to their
thick peptidoglycan cell wall structure.
, 6. A urine specimen should ideally be analyzed within:
A. 12 hours at room temperature
B. 24 hours at room temperature
C. 2 hours of collection
D. 48 hours of collection
Rationale: Urine undergoes chemical and cellular changes after collection,
making prompt analysis important for accurate results.
7. Which anticoagulant is commonly used for coagulation studies?
A. EDTA
B. Heparin
C. Potassium oxalate
D. Sodium citrate
Rationale: Sodium citrate preserves clotting factors by reversibly binding
calcium and is used for coagulation testing.
8. The universal precautions concept assumes that:
A. Only visibly contaminated specimens are infectious
B. Only blood is infectious
C. Healthy patients pose no risk
D. All human specimens may contain infectious agents
Rationale: Universal precautions require treating all specimens as
potentially infectious to minimize exposure risks.
9. Which white blood cell is most commonly elevated during bacterial
infections?
A. Eosinophil
B. Basophil
