However, NICE (2015) does not recommend routine monitoring of HbA1c in women with GDM. HbA1c monitoring for women with pre-existing diabetes after the first trimester would not provide a level of risk for GDM. In addition, NICE (2015) does not recommend fasting plasma glucose for diagnosis of GDM and suggests that further selective testing via self-monitoring of blood glucose using a glucometer, followed by a 2-hour 75 g oral glucose tolerance test (OGTT) at 24-28 weeks’ gestation if glycosuria is found to be at 2 or more as a single risk factor. GDM is diagnosed if the OGTT results indicates that plasma glucose is 7.8 mmol/L or above.