1. What is the normal reference range for fasting blood glucose in adults?

• A. 5 – 6 mmol/L

• B. 4 – 6mmol/L

• C. 5 – 7 mmol/L

• D. 4 – 5 mmol/L

2. In the laboratory, glycolysis can be inhibited in collected blood samples by using:

• A. EDTA

• B. Heparin

• C. Sodium fluoride

• D. Sodium citrate

3. In chemical pathology, which anticoagulant and preservative is commonly used in glucose estimation tubes?

• A. EDTA and sodium fluoride

• B. Heparin and potassium oxalate

• C. Sodium fluoride and potassium oxalate

• D. Citrate and sodium chloride

4. Which of the following is a valid reason to reject a fasting blood sugar sample?

• A. Blood collected after 8 hours of fasting

• B. Blood collected in a fluoride oxalate tube

• C. Hemolyzed blood sample

• D. Sample labeled correctly with patient details

5. 1. What is the ideal duration of fasting required before collecting blood for a fasting blood sugar test?

• A. 2–4 hours

• B. 6–8 hours

• C. 8–12 hours

• D. 12–16 hours

6. A fasting blood sugar test sample may be rejected if it is collected in which of the following tubes?

• A. Sodium fluoride tube

• B. EDTA tube

• C. Fluoride oxalate tube

• D. Gray-top tube

7. Why is proper labeling important for FBS samples?

• A. It helps improve glucose levels

• B. It reduces the test cost

• C. It ensures accurate patient identification

• D. It prevents hemolysis

8. What is the purpose of inverting the blood collection tube after drawing blood?

• A. To mix the blood with clot activator

• B. To prevent hemolysis

• C. To prevent clotting by mixing with anticoagulant

• D. To separate plasma from cells immediately

9. How many times should the gray top tube be inverted after blood collection for FBS testing?

• A. 3 times

• B. 8–10 times

• C. 5-7 times

• D. Not inverted at all

10. What is the correct order of draw when collecting blood for fasting blood sugar (FBS)?

• A. Sodium Citrate→ EDTA→ Sodium Fluoride

• B. EDTA→ Plain Tube → Sodium Fluoride

• C. Lithium→ Sodium Citrate → Sodium Fluoride

• D. Plain Tube → Sodium Citrate → Sodium Fluoride