Your doctor may order this test if you have signs of diabetes. More than likely, the doctor will order a fasting blood sugar test.
The blood glucose test is also used to monitor patients who already have diabetes.
The test may also be done if you have:
- An increase in how often you need to urinate
- Blurred vision
- Confusion or a change in the way you normally talk or behave
- Fainting spells
- Seizures (for the first time)
SCREENING FOR DIABETES
This test may also be used to screen a person for diabetes.
High blood sugar and diabetes may not cause symptoms in the early stages. A fasting blood sugar test is almost always done to screen for diabetes.
If you are over age 45, you should be tested every 3 years.
If you have any of the risk factors below, ask your health care provider about getting tested at an earlier age and more often:
- Overweight (body mass index, or BMI, of 25 or higher) and other risk factors
- Blood pressure of 140/90 mmHg or higher, or unhealthy cholesterol levels
- Member of a high-risk ethnic group (African American, Hispanic American, Native American, Asian American, or Pacific Islander)
- Woman who has delivered a baby weighing 9 pounds or more, or who had gestational diabetes
- Polycystic ovary disease
- Close relative with diabetes (such as a parent, brother or sister)
Children age 10 and older who are overweight and have at least two of the risk factors listed above should be tested for type 2 diabetes every 3 years, even if they have no symptoms.