Screening for diabetes mellitus in pregnancy.

We do not agree with their statement, “In high risk populations such as Asians, the World Health Organization (WHO) advocates screening during the first trimester to detect previously undiagnosed diabetes and a formal oral glucose tolerance test between 24 and 28 weeks of gestation to diagnose gestational diabetes mellitus”. One of the principal criteria for screening as defined by the WHO is that the test should be applicable to the whole population. Universal screening for GDM is superior to risk factor based screening, in detecting more cases, facilitating early diagnosis and ensuring improved pregnancy outcome [3].