Sugar periodically test.. Withdraw a small amount of blood by a needle is inserted into the arm vein in the lab

Something must be done sugar test to check periodically with each periodic inspection done. 

Are testing in the lab by dragging a small amount of blood by a needle is inserted into the arm vein in the lab. 

Could the blood level rises if you took some food before the test, but should not be higher than 200 mg / dl.

Blood glucose analysis: the blood sugar level:
The determination of blood sugar, that is to say the level of blood sugar, is a blood test that the doctor prescribes in a routine way. But it is mainly used to diagnose a possible diabetes.

What is blood glucose?
Blood glucose refers to the level of glucose in the blood. Remember that glucose is the main sugar of the body. It comes from the diet and is the main source of energy for the cells.
Part of the blood glucose is used to produce energy while the rest is stored as glycogen, ready to be mobilized when needed.
The concentration of glucose in the blood is regulated by pancreatic hormones:
insulin, which is naturally produced in response to elevated blood sugar levels and promotes its absorption into cells;
glucagon, which has the opposite role. Secreted in response to a drop in the level of glucose in the blood, it promotes its release from the cells.
This hormonal control normally helps maintain a normal blood glucose level. But in some cases, the blood sugar level may be higher or lower than the reference values ​​and may be the cause of various disorders.

What is the purpose of the blood glucose test??
The doctor prescribes a blood glucose test if he suspects diabetes.
But it is a routine test that the doctor offers regularly. And in particular in the following cases:
- weight loss;
- attention disorder;
- unusual tiredness;
- thirst ;
- discomfort ;
- or in pregnant women.

Blood glucose level and diet:
The blood glucose level varies automatically with the diet. Classically, the level of glucose in the blood increases during the meal to decrease gradually and return to a normal value when the regulatory mechanisms have been put in place.
Foods have a glycemic index (or index), which refers to the speed at which their sugar reaches the blood once ingested. For example, oatmeal and green beans have a low glycemic index, while white bread or bananas are high.

How to interpret the results?
The normal value of blood glucose in a fasted person is between 0.7 and 1.1 g / l.
Too high blood glucose, called hyperglycemia, can be a sign of:
- diabetes (above 1.26 g / l);
- pancreas involvement, such as inflammation or cancer;
- hyperthyroidism (the thyroid gland secretes too much thyroid hormone in this case);
- or stress, caused by trauma, stroke or surgery.

On the contrary, a low blood glucose level, called hypoglycaemia, can be a sign of:
- undernutrition;
- a significant weight loss;
- excessive consumption of alcohol;
- adrenal or pituitary insufficiency;
- hypothyroidism (the thyroid gland secretes too little thyroid hormone in this case).
Note that hypoglycemia can cause discomfort or even coma.

What are the factors of variation?
There are several factors that can vary blood sugar levels:
- the amount of food intake;
- the distance to the meal;
- the physical exercise performed;
- it can also vary slightly from one individual to another.

How is the analysis done?
The blood glucose is measured by taking venous blood (usually in the bend of the elbow), in a medical analysis laboratory.
The patient must be fasting for at least 8 to 12 hours. The doctor will give further details as to whether or not drugs have been taken for patients on treatment.
Note that the doctor may also request an oral hyperglycemia test. This is to analyze the blood sugar 2 hours after drinking a sugar solution, to see how the body manages or not to regulate the blood glucose concentration.
Favoring a balanced diet and regular exercise can help regulate blood sugar.