Early Gestational Diabetes Screening in the Gravid Obese Woman

Specific Aim 1: To test the hypothesis that early GDM screening between 14-18 weeks in obese women (body mass index ≥30.0) will result in improved perinatal outcomes. Specific Aim 2: To test the hypothesis that a lower diagnostic threshold for GDM at 14-18 weeks will result in improved detection of GDM and reduce the need for third-trimester testing. Specific Aim 3: To test the hypothesis that 1,5-anhydroglucitol, a sensitive marker of hyperglycemia, can be used as a simple and sensitive serum test for GDM in the obese population.