Which of the following statements about the OGTT for GDM is true?

The statement regarding the use of a 75 g glucose load in the Oral Glucose Tolerance Test (OGTT) for gestational diabetes mellitus (GDM) is accurate. The OGTT is a critical diagnostic tool used to assess how the body processes glucose. In the context of diagnosing GDM, a standard protocol recommended by the World Health Organization involves administering a glucose load of 75 grams.

The importance of the 75 g glucose load lies in its role as a benchmark that helps to evaluate the body's ability to regulate blood sugar levels post-consumption. During the test, blood glucose levels are measured at baseline and at intervals following the ingestion of the glucose solution. If the glucose levels exceed the established thresholds after the test, it indicates an impaired glucose tolerance, confirming a diagnosis of GDM.

The other options contain inaccuracies in relation to the common practices and guidelines surrounding the OGTT. For instance, while fasting is typically recommended, the standard fasting period is usually around 8 hours rather than 12 hours. The procedure does not have to be conducted exclusively in the morning; it can occur at various times throughout the day as long as fasting guidelines are adhered to. Finally, previous testing results are often taken into account when determining the management and testing