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Glycohemoglobin A1c: A promising screening tool in gestational diabetes mellitus

Saleh A Aldasouqi1, David J Solomon, Samia A Bokhari

  • 1Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, Michigan, USA.

International Journal of Diabetes in Developing Countries
|February 19, 2010
PubMed

Insights

Glycohemoglobin A1c (HbA1c) shows promise as a sensitive screening tool for gestational diabetes mellitus (GDM) in high-risk pregnancies. Further research is needed to confirm its specificity and clinical utility.

Area of Science:

  • Obstetrics and Gynecology
  • Endocrinology
  • Clinical Chemistry

Background:

  • Current gestational diabetes mellitus (GDM) screening methods are inconvenient.
  • Alternative screening tests for GDM are needed.
  • The role of glycohemoglobin A1c (HbA1c) in GDM screening is debated.

Purpose of the Study:

  • To evaluate the effectiveness of HbA1c as a screening test for GDM.
  • To assess the association between HbA1c levels and GDM diagnosis via oral glucose tolerance test (OGTT).

Main Methods:

  • Retrospective study conducted at a tertiary teaching hospital.
  • Reviewed laboratory records of pregnant women with both OGTT and HbA1c measurements.
  • Analyzed data using SPSS, calculating means and sensitivities.

Main Results:

  • HbA1c identified 87.1% of GDM cases at a cut-off of 6.0%.
  • Mean HbA1c was significantly higher in women with GDM (6.9%) compared to those without (6.4%).
  • Sensitivities ranged from 100% at 5.0% to 39.5% at 7.0% HbA1c.

Conclusions:

  • HbA1c demonstrates reasonable sensitivity for GDM screening in high-risk populations.
  • Further prospective studies are required to validate these findings and assess specificity.
  • HbA1c may offer a more convenient alternative for GDM screening.
Abstract

Keywords:
A1cHbA1cdiagnosisgestational diabetes mellitusscreening

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