Nutrition

Fasting blood glucose

Fasting blood glucose is the blood glucose level , which is done by a laboratory blood test.

What is blood sugar?

Blood sugar is the concentration of sugar in the blood. Its values ​​change from one moment to the other of the day, according to the food intake of an individual.

The pancreas is responsible for regulating blood sugar in the body, thanks to a hormone secreted by the pancreas in the blood, insulin. Poor functioning of the pancreas is the cause of diabetes, which is an excess of glucose (sugar) in the blood.

The measurement of blood glucose thus makes it possible to control whether the body is capable of regulating the concentration of sugar in the blood.

Why do this exam on an empty stomach?

Fasting blood glucose is, by definition, uninfluenced by a meal, so it is only sensitive to insulin concentration and, if elevated, can be used to diagnose diabetes.

How long does it take to fast?

Before taking the blood test, the patient should not have eaten or drunk (except water) for at least 8 hours. Ideally, if you combine this analysis with that of triglycerides or cholesterol, it should be fasting for 12 hours.

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Read also :

> Diabetes in women: what peculiarities?
> Diabetes: it is important to be well followed!
> 10 things to know about diabetes
> Insulin treatment: how does it work?

Author: Elide Achille.
Expert consultant: Dr. Claude Colas, diabetologist doctor.

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