 The results of this study suggest that the deep-sea criteria have better diagnostic accuracy than the WHO and IADS criteria for diagnosing gestational diabetes mellitus. The deep-sea criteria had a higher sensitivity and specificity when compared to the other two criteria making it more suitable for use in epidemiological studies and for diagnosis in primary care settings. This article was authored by Nitya Balgopalan, Rambha Pathak, Farzana Islam and others.