To re-emphasize the need for fluoride in blood samples for glucose-level testing

Area of Science:

• Clinical Chemistry
• Biochemistry
• Hematology

Background:

• Accurate blood glucose measurement is critical for diagnosing and managing diabetes.
• Glycolysis, the breakdown of glucose, occurs in collected blood samples, potentially altering test results.
• Blood clotting can also interfere with accurate glucose level determination.

Purpose of the Study:

• To evaluate the impact of glycolysis and clotting on blood glucose levels in collected samples.
• To determine the necessity of using inhibitors for reliable glucose testing.
• To highlight the importance of proper sample handling in clinical diagnostics.

Main Methods:

• Blood samples from 30 subjects were divided into two portions.
• One portion was treated with Fluoride/Ethylene Diamine Tetra Acetate (E.D.T.A.) to inhibit glycolysis and clotting.
• The second portion was left untreated to allow natural clotting and glycolysis.

Main Results:

• Untreated blood samples showed a significant decline in glucose levels: 8 mg/dl in the first hour and an additional 7 mg/dl per hour over the next two hours.
• Samples treated with Fluoride/E.D.T.A. demonstrated inhibited glycolysis and clotting, preserving glucose concentrations.
• The study confirmed substantial glucose degradation in blood samples lacking inhibitors.

Conclusions:

• The addition of a glycolysis inhibitor, such as Fluoride/E.D.T.A., is essential for accurate blood glucose level testing.
• Failure to use inhibitors can lead to falsely low glucose readings, potentially misdiagnosing patients.
• Standardized sample collection protocols including inhibitors are crucial for reliable clinical chemistry results.