Effects of Sodium Fluoride – Potassium Oxalate on Blood Lipid Profile Results and Lipid Stability when using this Anticoagulant

  • Xinh Thi Le
  • Ngoc Thi My Le

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Introduction: Some previous studies have shown the effect of K2EDTA, heparin, citrate, kalioxalate on lipid test results [1,2,3], but no studies on sodium fluoride - potassium oxalate. Furthermore, it is also important to ensure sample stability during testing. We performed this study to evaluate the effect of NaF-KOx on lipid results and lipid stability when storing.

Methods: A cross-sectional study was conducted on the residual of 150 pairs of serum and NaF-KOx plasma samples from the patients at the University Medical Center 2. These patients participated voluntarily after signing the consent form. We divided the samples into groups: serum (group 1), unpreserved plasma (group 2); stored plasma for 24 hours at 2-8°C (group 3), and stored plasma for 48 hours at 2-8°C (group 4). All samples were analyzed on an AU480 system – Beckman Coulter. The data would be processed using Stata 10.0.

Results: The results difference between these groups: 2,3,4 compared to group 1 was statistically significant (p < 0.001). Total cholesterol, triglycerides, HDL-C, and LDL-C concentrations in group 2 decreased, respectively: 5.83%; 6.77%; 5.12%; 5.96%. We found the lipid test results of group 3 and group 4 also reduced compared to group 1: cholesterol decreased by 5.25%, 5.77%; triglycerides by 6.7%, 6.49%; HDL-C by 5.8, 7.22%; and LDL-C by 4.79%; 5.05%. After 48 hours, cholesterol, HDL-C, and LDL-C concentration continued to reduce, while the difference in triglycerides concentration was not statistically significant.

Conclusions: NaF-KOx anticoagulant reduces lipid test results. We should not use NaF-KOx plasma to measure lipid tests. 

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