Sample Questions and Answers
Which department in a clinical laboratory is responsible for analyzing blood and other body fluids?
A) Microbiology
B) Hematology
C) Immunology
D) Clinical Chemistry
Answer: B) Hematology
What is the primary purpose of a clinical laboratory?
A) To diagnose diseases
B) To conduct research
C) To provide patient care
D) To analyze specimens
Answer: D) To analyze specimens
Which of the following is a common anticoagulant used in blood collection tubes?
A) Sodium chloride
B) Sodium citrate
C) Sodium hydroxide
D) Sodium bicarbonate
Answer: B) Sodium citrate
What does the term ‘serology’ refer to in clinical laboratory practice?
A) Study of blood cells
B) Study of bodily fluids
C) Study of serum and its components
D) Study of microorganisms
Answer: C) Study of serum and its components
Which laboratory department is responsible for blood typing and crossmatching?
A) Microbiology
B) Hematology
C) Immunohematology
D) Clinical Chemistry
Answer: C) Immunohematology
What is the purpose of a requisition form in laboratory testing?
A) To request laboratory supplies
B) To order laboratory tests
C) To schedule patient appointments
D) To bill patients for services
Answer: B) To order laboratory tests
Which of the following is a common method for sterilizing laboratory equipment?
A) Boiling
B) Autoclaving
C) Freezing
D) Drying
Answer: B) Autoclaving
What is the primary function of a centrifuge in a clinical laboratory?
A) To mix solutions
B) To heat samples
C) To separate components of a sample
D) To sterilize equipment
Answer: C) To separate components of a sample
Which organization sets standards for laboratory testing and accreditation?
A) World Health Organization (WHO)
B) Centers for Disease Control and Prevention (CDC)
C) Clinical and Laboratory Standards Institute (CLSI)
D) Food and Drug Administration (FDA)
Answer: C) Clinical and Laboratory Standards Institute (CLSI)
What is the purpose of quality control in laboratory testing?
A) To ensure patient safety
B) To maintain equipment
C) To ensure accuracy and reliability of test results
D) To reduce laboratory costs
Answer: C) To ensure accuracy and reliability of test results
Which of the following is a common method for identifying bacteria in microbiology?
A) Gram staining
B) PCR amplification
C) Western blotting
D) ELISA
Answer: A) Gram staining
What is the role of a pathologist in a clinical laboratory?
A) To perform laboratory tests
B) To interpret test results
C) To collect patient specimens
D) To maintain laboratory equipment
Answer: B) To interpret test results
Which of the following is a common laboratory test for assessing kidney function?
A) Complete blood count (CBC)
B) Liver function tests
C) Blood urea nitrogen (BUN)
D) Electrocardiogram (ECG)
Answer: C) Blood urea nitrogen (BUN)
What is the purpose of a control sample in laboratory testing?
A) To calibrate equipment
B) To serve as a reference for comparison
C) To train laboratory personnel
D) To dispose of waste materials
Answer: B) To serve as a reference for comparison
Which of the following is a common method for sterilizing laboratory glassware?
A) Boiling
B) Autoclaving
C) Dry heat
D) Chemical disinfectants
Answer: B) Autoclaving
What is the primary purpose of a laboratory information system (LIS)?
A) To manage patient records
B) To process laboratory test orders and results
C) To schedule patient appointments
D) To bill patients for services
Answer: B) To process laboratory test orders and results
Which of the following is a common method for collecting urine samples?
A) Venipuncture
B) Capillary puncture
C) Midstream clean-catch
D) Arterial puncture
Answer: C) Midstream clean-catch
What is the purpose of a blood culture in microbiology?
A) To assess blood clotting
B) To detect microorganisms in the blood
C) To measure blood glucose levels
D) To determine blood type
Answer: B) To detect microorganisms in the blood
Which of the following is a common method for measuring blood glucose levels?
A) Hemoglobin A1c test
B) Complete blood count (CBC)
C) Liver function tests
D) Electrocardiogram (ECG)
Answer: A) Hemoglobin A1c test
What is the purpose of a blood gas analysis?
A) To assess oxygen and carbon dioxide levels in the blood
B) To measure blood glucose levels
C) To determine blood type
D) To evaluate kidney function
Answer: A) To assess oxygen and carbon dioxide levels in the blood
Which of the following is a common method for sterilizing laboratory equipment?
A) Boiling
B) Autoclaving
C) Freezing
D) Drying
Answer: B) Autoclaving
What is the primary function of a centrifuge in a clinical laboratory?
A) To mix solutions
B) To heat samples
C) To separate components of a sample
D) To sterilize equipment
Answer: C) To separate components of a sample
Which of the following is used to detect the presence of antibodies in a patient’s serum?
A) Western blotting
B) Enzyme-linked immunosorbent assay (ELISA)
C) Polymerase chain reaction (PCR)
D) Gram staining
Answer: B) Enzyme-linked immunosorbent assay (ELISA)
Which test is used to monitor the effectiveness of anticoagulant therapy?
A) Complete blood count (CBC)
B) Prothrombin time (PT)
C) Liver function tests
D) Electrolyte panel
Answer: B) Prothrombin time (PT)
What is the term for a sample that is not handled properly and produces inaccurate results?
A) Contaminated sample
B) Valid sample
C) Error sample
D) Inaccurate sample
Answer: A) Contaminated sample
What does the term “sensitivity” refer to in laboratory testing?
A) The ability of a test to detect the presence of a disease
B) The ability of a test to correctly identify healthy individuals
C) The time taken to process the test
D) The ability of a test to produce a positive result
Answer: A) The ability of a test to detect the presence of a disease
What is the primary responsibility of a clinical laboratory scientist?
A) To collect specimens from patients
B) To interpret laboratory test results
C) To prepare patient meals
D) To maintain laboratory equipment
Answer: B) To interpret laboratory test results
Which of the following is considered a biological hazard in the laboratory?
A) Bloodborne pathogens
B) Radiation
C) Sharp objects
D) Electrical hazards
Answer: A) Bloodborne pathogens
Which of the following procedures is used for detecting bacteria in a urine sample?
A) Urine culture
B) Blood smear
C) Skin biopsy
D) Stool culture
Answer: A) Urine culture
What type of sample is typically used for a throat culture?
A) Blood
B) Saliva
C) Sputum
D) Swab from the throat
Answer: D) Swab from the throat
Which of the following is the most appropriate action when a laboratory worker experiences a needle stick injury?
A) Clean the wound with alcohol and resume work
B) Report the injury immediately to the supervisor and follow proper procedures
C) Ignore the injury if the needle is clean
D) Bandage the wound and continue working
Answer: B) Report the injury immediately to the supervisor and follow proper procedures
What is the role of a laboratory technician in clinical testing?
A) To diagnose patients
B) To collect and process samples
C) To prescribe medication
D) To provide clinical consultations
Answer: B) To collect and process samples
What type of test is used to assess the presence of infections caused by viruses?
A) Complete blood count (CBC)
B) Serological test
C) Urinalysis
D) Radiography
Answer: B) Serological test
Which of the following is used to measure the levels of specific proteins in the blood?
A) Biopsy
B) Blood culture
C) Protein electrophoresis
D) Urinalysis
Answer: C) Protein electrophoresis
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