Question

A 27-year-old woman at 26 weeks' gestation undergoes a 75 g oral glucose tolerance test as part of routine antenatal care. Results are: fasting plasma glucose 5.5 mmol/L, 1-hour 10.8 mmol/L, 2-hour 8.5 mmol/L. How should these results be interpreted according to recent Australian consensus for gestational diabetes mellitus (GDM)?

Accepted Answer

GDM is diagnosed based on the fasting value alone

Answer

Normal test; no further action is required

Answer

Impaired glucose tolerance but not diagnostic of GDM

Answer

GDM is diagnosed only if both fasting and 2-hour values are elevated

Answer

GDM is diagnosed only if all three values are elevated

Practice question