The American Diabetes Association (ADA) recommends glucose testing of women with any of the risk factors listed above as soon as feasible during pregnancy. If gestational diabetes is not diagnosed during the initial screening of high risk women, they should be retested between 24 and 28 weeks of pregnancy. Similarly, women of average risk should be tested between 24 and 28 weeks of pregnancy.
The ADA describes 2 approaches to evaluation of gestational diabetes in pregnant women:
If the blood glucose level is elevated in either of the approaches, a diagnosis of gestational diabetes is made.