Gestational Test
Gestational diabetes can be diagnosed with testing for blood glucose level, if it is higher gestational diabetes be confirmed with other tests.
Gestational diabetes diagnosis test
It measures your blood glucose levels after you have gone at least 8 hours without eating. This test is used to detect diabetes or pre-diabetes.
Random blood glucose test
Checks your blood glucose without regard to when you ate your last meal. A random blood glucose level of 200 mg/dL or more, plus presence of the symptoms: increased urination, increased thirst, unexplained weight loss, may mean that you have diabetes.
These tests can find gestational diabetes in some women, but other tests are needed to be sure diabetes is not missed.
Screening glucose tolerance test
For this test, you have to drink a glucose rich beverage and have the blood glucose level checked after an hour. This test can be done at any time of the day. If the results are above normal, then you may need further tests to confirm gestational diabetes.
Oral Glucose Tolerance Test (2-Hour Plasma Glucose Result)
Gestational diabetes is also diagnosed based on plasma glucose levels measured during the OGTT. Blood glucose levels are checked four times during the test. If your blood glucose levels are above normal at least twice during the test, you have gestational diabetes. Below shows the results for the glucose tolerance test for gestational diabetes.
| Oral glucose tolerance test Gestational diabetes |
| Fasting | 95 or higher |
| At 1 hour after meals | 180 or higher |
| At 2 hour after meals | 155 or higher |
| At 3 hour after meals | 140 or higher |
Note: Some labs use other numbers for this test.
These numbers are for a test using a drink with 100 grams of glucose.
Next: Gestational diabetes treatment
