Lowering the bar for gestational diabetes

Two years ago, the International Association of Diabetes and Pregnancy Study Groups (IADPSG) produced a report to serve as the basis for new international criteria for diagnosing gestational diabetes (GDM). However, some countries, including Australia, are yet to endorse the new diagnostic criteria – which are likely to cause a dramatic increase in the incidence of GDM diagnoses. 

A new study, just published in Diabetes Care, is set to muddy the waters even further. 

The post-hoc analysis of the Hyperglycemia and Adverse Pregnancy Outcome (HAPO) study, which was used to develop the international consensus definition of GDM, showed striking differences in the proportions of women diagnosed with GDM according to fasting, one- or two hour-post glucose load values.

For example, 55% of women from the whole cohort had fasting glucose levels which met the GDM threshold, but only 24% of women in Thailand and 26% in Hong Kong met the criteria