The use of glucose screen test alone in diagnosing gestational diabetes mellitus in Bahrain-preliminary report

Abstract EN

Objective : To establish a cutoff point where gestational diabetes mellitus (GDM) can be diagnosed based on the one-hour glucose challenge test (GCT) alone without doing the Oral Glucose Challenge test (OGTT).

Setting : Ministry of Health, Bahrain.

Design : Retrospective.

Method : All pregnant ladies with positive screen test of at least 7.8 mmol / l in 2002 were identified and their subsequent oral glucose challenge test (OGTT) evaluated.

Result : Two thousand six hundred and forty-eight ladies with a positive screen test were identified.

Five Hundred and sixty-two had GDM and 537 had impaired glucose tolerance test (IGT).

The ROC curve yielded a cutoff value of 11.05 mmol/L with high specificity and low false positive results.

Conclusion : GDM can be diagnosed from the GCT using a value of 11.05mmol / L.