Screening for GDM

• The 2-hour 75 g oral glucose tolerance test (OGTT) should be used to test for gestational diabetes.

• Women who have had gestational diabetes in a previous pregnancy should be offered early self-monitoring of blood glucose or an OGTT at 16–18 weeks, and a further OGTT at 28 weeks if the results are normal.

• Women with any of the other risk factors for gestational diabetes should be offered an OGTT at 24–28 weeks.

• Screening for gestational diabetes using fasting plasma glucose, random blood glucose, glucose challenge test and urinalysis for glucose should not be undertaken