Your Guide to Prenatal Tests
The what, when, and why of 30 pregnancy exams, screens, and scans
Who: All women
When: Usually between 24 and 28 weeks, though women at greater risk for gestational diabetes (including those with a history of gestational diabetes, a family history of diabetes, women over 35 and those who are obese) may have it done as early as the first prenatal visit.
How: A blood test after you drink eight ounces of a sugary liquid (glucola) within about five minutes.
Why: The glucose test measures your blood-sugar level, which indicates your risk of gestational diabetes.
Results and follow-up: If levels are high, a second, longer test (the three-hour glucose tolerance test; see next slide) can more accurately diagnose the condition.