What is the common test used to screen for gestational diabetes?

The glucose tolerance test is the common method used to screen for gestational diabetes during pregnancy. This test evaluates how well the body processes glucose, helping to determine whether a pregnant individual has developed gestational diabetes. It typically involves measuring blood sugar levels after fasting and then giving a sugary drink for which blood samples are taken at intervals.

This test is particularly important because gestational diabetes can lead to complications for both the mother and the baby if not detected and managed early. The glucose tolerance test is preferred because it provides a more comprehensive assessment of glucose metabolism compared to other tests. For instance, while a fasting blood glucose test can be informative, it may not fully capture the potential for gestational diabetes. Blood pressure tests and complete blood counts serve different purposes and do not diagnose gestational diabetes, making them irrelevant in this context.