What is the purpose of sodium fluoride in preserving a blood sample?

What is the purpose of sodium fluoride in preserving a blood sample?

• A. To enhance chemical reactions
• B. To prevent coagulation for testing
• C. To stabilize drug concentrations
• D. To maintain blood color

Answer: (B)

Sodium fluoride is primarily used in the preservation of blood samples to prevent coagulation for testing purposes. This compound acts as an anticoagulant by inhibiting the enzyme enolase, which is essential in the glycolytic pathway. By preventing the metabolism of glucose in the blood, sodium fluoride effectively stops the clotting process, which is critical for obtaining accurate test results, especially in the analysis of blood glucose levels. When a blood sample coagulates, it can lead to the formation of clots that may interfere with laboratory tests, producing unreliable results. Thus, the inclusion of sodium fluoride ensures that the blood remains in a liquid state, allowing for an accurate assessment of its components over time.

Sodium fluoride is primarily used in the preservation of blood samples to prevent coagulation for testing purposes. This compound acts as an anticoagulant by inhibiting the enzyme enolase, which is essential in the glycolytic pathway. By preventing the metabolism of glucose in the blood, sodium fluoride effectively stops the clotting process, which is critical for obtaining accurate test results, especially in the analysis of blood glucose levels.

When a blood sample coagulates, it can lead to the formation of clots that may interfere with laboratory tests, producing unreliable results. Thus, the inclusion of sodium fluoride ensures that the blood remains in a liquid state, allowing for an accurate assessment of its components over time.