This guide summarizes clinical evidence about prenatal treatment and delivery management for women with gestational diabetes. It also summarizes evidence about followup for the development of type 2 diabetes among women who have had gestational diabetes. There are very few high-quality studies focusing on the treatment and appropriate followup of gestational diabetes. Many of the questions that surround these clinical issues have only a limited evidence base. This guide does not cover the general care of women with type 1 or type 2 diabetes during pregnancy. It also does not cover screening for gestational diabetes or evidence about diet and exercise in the management of gestational diabetes.