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Hypertriglyceridemia and Its Association with HbA1c Test: A Prospective In Vivo Controlled Study

Rene Rodriguez-Gutierrez1,2,3, Leonardo G Mancillas-Adame1,2, Giselle Rodríguez-Tamez1,2

  • 1University Hospital "Dr. Jose E. Gonzalez, " Universidad Autonoma de Nuevo Leon, Endocrinology Division, Department of Internal Medicine, Monterrey 64460, Mexico.

International Journal of Endocrinology
|March 21, 2019
PubMed

Insights

High triglyceride levels do not affect HbA1c test results. This study confirms that clinicians can reliably use HbA1c to monitor diabetes management, even with hypertriglyceridemia.

Area of Science:

  • Clinical Chemistry
  • Endocrinology
  • Diabetes Mellitus Research

Background:

  • Hypertriglyceridemia and hyperglycemia frequently coexist in diabetic patients.
  • The influence of elevated triglycerides on HbA1c assay accuracy is not well-established.
  • Understanding this relationship is crucial for reliable diabetes monitoring.

Purpose of the Study:

  • To investigate the association between triglyceride levels and HbA1c assay results.
  • To determine if hypertriglyceridemia impacts the reliability of HbA1c measurements.
  • To provide clarity for clinicians interpreting HbA1c in diabetic patients with high triglycerides.

Main Methods:

  • Prospective controlled study involving 44 patients admitted for diabetic ketoacidosis or hypertriglyceridemia-induced pancreatitis.
  • HbA1c, triglyceride, glucose, and hemoglobin levels were measured at baseline, 24, and 48 hours.
  • HbA1c analysis utilized NGSP-approved high-performance liquid chromatography (Bio-Rad D10).

Main Results:

  • A significant decrease in mean triglyceride levels was observed from baseline to day 2.
  • A statistically significant, albeit small, difference in mean serum HbA1c was noted between days 0 and 2 (p=0.004).
  • A weak but statistically significant correlation (r=0.256, p=0.015) was found between changes in HbA1c and triglycerides, but these changes were not clinically significant.

Conclusions:

  • Elevated triglyceride levels do not interfere with the interpretation of HbA1c assay results.
  • Clinicians and patients can be assured of HbA1c assay reliability, irrespective of triglyceride levels.
  • Hypertriglyceridemia is not a significant confounding factor in HbA1c interpretation for diabetes management.
Abstract

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