MCQ’S In Medical Laboratory Technology

Here are some sample multiple-choice questions (MCQs) in the field of Medical Laboratory Technology:

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### 1. Which of the following is used as an anticoagulant in blood collection tubes for hematology tests?
A) Sodium citrate
B) Sodium chloride
C) Sodium bicarbonate
D) Sodium hydroxide

**Answer:** A) Sodium citrate

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### 2. What is the normal range for fasting blood glucose levels in adults?
A) 70-100 mg/dL
B) 90-120 mg/dL
C) 50-80 mg/dL
D) 120-150 mg/dL

**Answer:** A) 70-100 mg/dL

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### 3. Which of the following is the most commonly used method for urine culture and sensitivity testing?
A) Wet mount preparation
B) Streak plate method
C) Gram staining
D) Direct microscopic examination

**Answer:** B) Streak plate method

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### 4. The presence of what in a urine sample is commonly used to detect urinary tract infections?
A) Hemoglobin
B) Protein
C) Nitrites
D) Ketones

**Answer:** C) Nitrites

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### 5. Which of the following is the principle of the enzyme-linked immunosorbent assay (ELISA)?
A) Precipitation of antigens
B) Enzyme-catalyzed color change reaction
C) Antibody binding to a solid-phase antigen
D) Agglutination of bacterial cells

**Answer:** B) Enzyme-catalyzed color change reaction

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### 6. What is the primary purpose of performing a hemoglobin A1c test?
A) To evaluate liver function
B) To monitor long-term blood glucose control
C) To assess kidney function
D) To detect anemia

**Answer:** B) To monitor long-term blood glucose control

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### 7. Which of the following is a characteristic of a Gram-negative bacterium?
A) Purple color after Gram staining
B) Thick peptidoglycan layer
C) Thin peptidoglycan layer and an outer membrane
D) Produces endospores

**Answer:** C) Thin peptidoglycan layer and an outer membrane

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### 8. What is the role of a refractometer in the laboratory?
A) Measure the pH of a sample
B) Measure the concentration of glucose in blood
C) Measure the refractive index of a liquid
D) Measure the viscosity of a sample

**Answer:** C) Measure the refractive index of a liquid

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### 9. In the laboratory, which of the following instruments is used to measure the concentration of hemoglobin in blood?
A) Hemocytometer
B) Spectrophotometer
C) Centrifuge
D) Microscope

**Answer:** B) Spectrophotometer

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### 10. Which of the following is an example of a qualitative test for the detection of a disease-causing microorganism?
A) PCR (Polymerase Chain Reaction)
B) Culture and sensitivity
C) Gram staining
D) Blood glucose level test

**Answer:** C) Gram staining

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