Screening for Gestational Diabetes
To screen for gestational diabetes, your doctor will order a glucose challenge test which measures your body’s response to glucose (sugar). No fasting is required for this test. You visit your doctor (or lab) and drink a glucose solution and then have your blood drawn an hour after drinking the solution If the results are normal, no other tests are done.
If the results are positive, some doctors may order another test called an oral glucose tolerance test.
This test may take as long as 4 hours and you will need to fast before you arrive. In addition, you will also have to sit quietly (so bring a good book – maybe on pregnancy) as physical activity may interfere with the test results.
On the day of testing, a blood sample will be collected when you arrive. This is your fasting blood glucose value. It provides a baseline for comparing other glucose values.
You will be given a sweet liquid to drink that contains a measured amount of glucose (for pregnant women usually 75 grams). It is best to drink the liquid quickly.
Blood samples will be collected at timed intervals of 1, 2, and possibly 3 hours after you drink the glucose.
If the results are positive, your doctor will recommend a treatment plan. Treating and managing gestational diabetes is critical to your health and your baby’s health.