Oral glucose tolerance test
Abbreviation: OGTT
The oral glucose tolerance test (OGTT) is the standard diagnostic test for gestational diabetes in Singapore. You fast overnight, then have a fasting blood draw before drinking a glucose solution. Blood is drawn again at one hour and two hours afterward to track how your body processes sugar. The whole process takes about two to three hours. If one or more readings are above the threshold, gestational diabetes is diagnosed and your care team will discuss diet changes, monitoring, and possibly medication. Managing gestational diabetes well reduces risks of a large baby, difficult delivery, and longer-term diabetes for both you and your child.
What This Means for You
Understanding Oral glucose tolerance test is an important part of your second trimester journey. During pregnancy, your care team will use this term regularly. Being familiar with it means you can ask better questions and feel more confident at your antenatal appointments.
Explore our Pregnancy hubGood to Know
MOH Singapore guidelines recommend OGTT for all pregnant women between 24 and 28 weeks, with high-risk women tested earlier, often in the first trimester. Fast from midnight before the test and bring a snack to eat afterward, as some women feel lightheaded once the test is done.
Source: https://www.acog.org/womens-health/dictionary
Always consult your healthcare provider for personalised advice.
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