Oral glucose tolerance test (OGTT) measures the body's ability to use glucose, the main energy source for the body. OGTT was performed for detection of diabetes and impaired glucose tolerance. This test can also be used for the diagnosis of gestational diabetes (diabetes during pregnancy).

In which case it is recommended that research?

Oral glucose tolerance test (OGTT) was performed in the following situations:

For detection of diabetes or impaired glucose tolerance.

For the detection of diabetes in pregnancy.

Screening in women with polycystic ovary syndrome.

Do I need prior training?

Oral glucose tolerance test (OGTT)

Typically, the preparation of this test includes:

Balanced diet - carbohydrate intake should be at least 150 to 200 g / day for three days before the test. Rich sources of carbohydrates are fruits, breads, cereals, rice, crackers and starchy vegetables - potatoes, corn and legumes.

Eight hours before being taken first blood sample is needed if you have not eaten, you have not smoked and are not sports.

You should tell your doctor about all medicines you are taking, whether prescription or not. You may need to stop certain drugs before the test.

OGTT took about 4 hours. During the test should not play sports and eat. You can take only water.

Oral glucose tolerance test (OGTT) in pregnancy

In conducting this test during pregnancy is not usually necessary preparation.

If you have any questions about how to prepare for the test, what the risks are and what the results should contact your doctor.

A method of conducting the survey:

Oral glucose tolerance test (OGTT)

On the day of the test to follow the following steps:

A sample of blood. This initial blood sample is used as a baseline value and is used for comparison with the results of other samples.

Drink a glucose solution with a specific concentration. It is desirable to drink a solution in the shortest possible time. For a standard test adopted by 75 grams to 100 grams of glucose. In pregnant women take 100 grams of glucose.

Blood samples were taken on the 1st, 2nd and 3rd hour after drinking a glucose solution. A blood sample may be taken 30 minutes after drinking the glucose solution, and up to more than 3 hours.

Oral glucose tolerance test (OGTT) in pregnancy

Drink a glucose solution. It is best if you do it as quickly as possible.

A sample of blood 1 hour after you drank the glucose solution. Normal blood sugar levels are at peak 1 hour after the administration of glucose solution and then decreases.

If the results show that you may have gestational diabetes should be held throughout the test.

Oral glucose tolerance test (OGTT) in the polycystic ovary syndrome

Drink a glucose solution. It is best if you do it as quickly as possible.

A sample of blood two hours after you drank the glucose solution. Normal blood sugar levels are at peak 1 hour after the administration of glucose solution and then decreases.

If the results of the research carried out in this case indicates that it may have diabetes need to make other tests.

Collection of blood by a medical professional:

Place the elastic cuff of the arm, with the aid of which the veins become larger and easier collection of blood;

Clean the place where the blood will be taken;

Insert the needle into the vein. It is possible to have more than one attempt for sampling blood

Place the syringe;

Syringe is filled with blood;

After collection of a sufficient quantity of blood sample was removed elastomeric membrane;

Place the cotton ball over the needle, and then she carefully pulled from the vein;

Pressed to the place from which blood was taken.

What do you feel during the test?

You may find it uncomfortable drinking the glucose solution. He is very cute. For some people it is possible to develop nausea and even vomiting. Vomiting violates test.

The sample of blood for carrying out the OGTT is taken from a vein in the arm. In this study, you can feel the tightening of the elastic cuff. At the time of blood sampling will not feel anything except possibly a slight stinging when inserting the needle.

Taking a few blood samples may cause you discomfort. The amount of donated blood is minimal.

Are there risks of conducting research?

For some people, after the test blood sugar levels after the test fall very slowly. You may feel weakness, hunger, sweating, nervousness, restlessness. If you have any of these symptoms, tell your doctor.

When taking venous blood OGTT there is a minimum risk of some problems:

The place where the blood was taken can occur bruising. To reduce the risk of this complication is usually sufficient squeezing site for several minutes after withdrawing the needle.

Very rarely can occur inflammation of the vein. This condition is called phlebitis and usually resolves after treatment with bandages.

In people with bleeding problems may have prolonged bleeding. Prolonged bleeding may also have at the intake of some drugs, such as aspirin, warfarin, etc. That prevent the blood from clotting. If you have any bleeding problems or are taking medication tell your doctor.

Results from the survey:

Oral glucose tolerance test (OGTT) measures the body's ability to use glucose, the main energy source for the body.

Normal values:

Normal values âEUR

Oral glucose tolerance test (OGTT)

When the intake of 100 g of glucose:

Basal blood glucose values âEUR

Blood glucose first time:

Glucose second time:

Blood sugar on the 3rd time:

Oral glucose tolerance test (OGTT) in pregnancy

When the intake of 50 g of glucose:

Blood glucose first time:

At blood glucose values âEUR

Oral glucose tolerance test (OGTT) in the polycystic ovary syndrome

When the intake of 75 g of glucose:

Glucose second time:

Deviations from the norm:

High levels of blood glucose could be due to:

Gestational diabetes.

Polycystic ovary syndrome.

Taking certain medications such as corticosteroids, niacin, phenytoin, diuretics, drugs for high blood pressure medication for the treatment of AIDS.

Stress.

Syndrome, Cushing.

Congenital diseases - such as cystic fibrosis (CF) or hemochromatosis.

Acromegaly.

Pheochromocytoma.

Low levels of blood glucose could be due to:

Certain medications such as drugs for the treatment of diabetes, certain drugs to treat high blood pressure or depression.

Celiac disease - a disease characterized by a breach in the absorption of nutrients.

Disease Addison.

Thyroid Problems - Hypothyroidism.

Insulinoma - cancer of the pancreas.

Cirrhosis of the liver.

Many medical conditions can cause abnormalities in levels of blood sugar. If you have an abnormal normal results your doctor will explain what can be attributed.

When you should do research?

The study of OGTT can not be held or why the results may not be helpful in the following cases:

When taking certain medications: corticosteroids, diuretics, anticonvulsants, contraceptives, NSAIDs, certain drugs to treat high blood pressure.

Alcohol intake.

Recent surgery, heart attack or childbirth.

Low-carbohydrate diet.

Vomiting after taking the glucose solution.