| Term | Definition |
| What is an oral glucose tolerance test | The oral glucose tolerance test is performed to screen for gestational diabetes. |
| oral glucose tolerance test | Gestational diabetes is generally diagnosed between the 24th and 28th week of pregnancy when insulin resistance usually begins |
| • Biophysical profile | a test that uses the nonstress test and ultrasound to examine fetal movements, heart rate, and amniotic fluid amounts. |
| • Nonstress testing | a measurement of the fetal heart rate in response to the fetus' movements |
| White classification | It distinguishes between gestational diabetes (type A) and diabetes that existed before pregnancy (pregestational diabetes). |