Blood glucose test in Barranquilla, Colombia

What does a blood glucose test measure?

It measures the amount of sugar (glucose) in the blood. It is the basic test to detect prediabetes and diabetes.

How are fasting results interpreted?

As a general reference: under 100 mg/dL is normal, 100 to 125 mg/dL indicates prediabetes, and 126 mg/dL or higher on two separate occasions confirms diabetes. The diagnosis is always made by a doctor.

What other glucose tests are there?

Glycated hemoglobin (HbA1c) shows the average over the past three months and does not require fasting. The oral glucose tolerance test measures how the body responds after a sugary drink and is widely used in pregnancy. Postprandial glucose is measured two hours after eating.

How should you prepare?

For fasting glucose, do not eat for 8 to 12 hours; water only. If you have diabetes, ask your doctor what to do with your medications that morning.

When should you get it?

In routine checkups, especially if you are overweight, have a family history of diabetes, high blood pressure, diabetes in a previous pregnancy, or symptoms such as excessive thirst, frequent urination or unexplained weight loss.

Find where to get a blood glucose test

On MedicosDoc you can find clinical laboratories that perform blood glucose, HbA1c and glucose tolerance tests. Compare options and book your appointment.