Early Detection of Gestational Diabetes Mellitus in Pregnancy

Inclusion Criteria: * 1\) age greater than or equal to 18 years old, * 2\) singleton gestation less than or equal to 12 weeks at initial obstetric visit, * 3\) receiving prenatal care at UMMHC and plans to deliver at UMMHC, * 4\) able and willing to provide informed consent, * 5\) English or Spanish speaking, and * 6\) are at high risk for developing GDM by ACOG clinical risk factor guidelines. Exclusion Criteria: * 1\) known diagnosis of pre-existing pregestational diabetes, * 2\) plan to receive prenatal care or deliver outside of UMMHC, * 3\) inability to complete oral glucose tolerance test (e.g. gastric bypass surgery history, gastric dumping syndrome history, vomiting of oral glucose tolerance test), or * 4\) systemic steroid use.