Glucose tolerance test during pregnancy preparation. Oral glucose tolerance test (OGTT). How is a glucose tolerance test performed during pregnancy: preparation

During pregnancy, any biochemical blood indicator has great importance and can tell a lot about the state of health of the mother and fetus.

In this regard, there is a list of mandatory tests that a woman must undergo. One of them is glucose tolerance test.

This procedure allows you to determine fetal supply level essential nutrients and exclude the presence of gestational diabetes in the mother.

Why is the test needed?

Quite a dangerous phenomenon during pregnancy, especially during later, is gestational diabetes. This condition poses a serious threat to the mother and unborn child. Early diagnosis disease helps to start treatment in a timely manner and prevent all possible risks.

In this regard, a glucose tolerance test is one of the mandatory tests during pregnancy. Usually this test is performed in the third trimester. However, for pregnant women included in potential risk groups, the analysis can be prescribed already during registration.

These include the following cases:

• the woman has predisposition to diabetes mellitus ;
• the woman has a personal history missed pregnancy or miscarriage;
• pregnancy occurred after the age of 35;
• is overweight.

How to take the test?

To obtain reliable analysis results, it is of great importance proper preparation to the procedure and the behavior of the pregnant woman during it.

A few days before taking the sample, it is necessary to exclude all spicy, fatty and spicy foods from the diet. It is especially necessary to refrain from using them on the eve of the analysis. Such products may affect the test results. The test must be carried out on an empty stomach.

The last meal should be eaten at least 8 hours before the procedure. However, before the analysis you should also not limit yourself too much in food. This may also affect the test result.

Before the procedure, the doctor usually informs you whether the pregnant woman needs to bring glucose and water with her in advance, or whether all the test supplies will be provided directly at the hospital. All medical institutions have different rules. If a pregnant woman must provide everything she needs herself, she must purchase glucose and water in advance and do not forget them on the day of the test. Also, for hygienic purposes, it is better to take your own mug with you.

The sampling procedure for glucose tolerance takes quite a lot of time. a lot of time. Its duration can be up to 3 hours. This must be taken into account. You can take a book or other thing with you to the hospital that will help pass the time.

Usually the procedure itself includes several stages. First, blood is taken from a woman's finger on an empty stomach. Next comes the addition of a glucose load. To do this, you need to drink glucose diluted in water. Depending on the type of test (one-hour, two-hour or three-hour), the dosage varies chemical element. For an hourly test it is 50 grams, for a two-hour test - 75 grams, for a three-hour test - 100. After the specified period, the pregnant woman will have to take the sample again.

While waiting for a second blood donation, a woman must follow some rules:

• You need to stay indoors, you should not go for a walk or do any physical exercise. This can lead to energy expenditure, resulting in a low glucose reading.
• It is best if the pregnant woman is at rest. At this time, you can lie down or sit quietly in a relaxed state.
• While waiting for a repeat test, it is prohibited to eat any food. You can only drink plain water without any additives.

The correctness of the analysis results directly depends on compliance with these rules.

Norm

The normal level of glucose in the blood depends on the type of test performed. Usually, in order to get a complete picture of the health status of the mother and child, doctors take into account everything indicators in aggregate. The substance content can be measured in different quantities: mol/l or mg/dl.

Each laboratory uses its own units of measurement. This must be taken into account when deciphering the results. The normal value for a fasting test is considered to be no more than 5.1 mmol/l. A deviation is considered to be a value in the range from 5.2 mmol/l to 6.1. A level above 6.1 mmol/L is considered an indicator of gestational diabetes.

If there is any deviation, even a slight one, at any stage of the test, the woman must be prescribed additional research.

In some laboratories, the test is not carried out according to the rules described above. In this case, the woman does not drink the glucose solution, but simply eats something sweet. This is a gross violation. In this case, no general norms and indicators can be developed, since it is impossible to accurately determine the amount of glucose entering the body.

The dangers of the glucose tolerance test

Many pregnant girls are worried about the dangers of conducting such a test. Such prejudices are associated with the fact that a significant amount of glucose enters the body at a time. However, all fears are unfounded. The level of sugar in the solution drunk by a pregnant woman is the same as in a regular donut with jam.

Women are also worried about the fact that while waiting for repeated tests they cannot eat anything at all, even if they really want to. Thus, the baby is not approached nutrients. These fears are also unfounded. The amount of glucose entering the mother’s body, which she consumed during the analysis, is quite enough to provide the baby with everything necessary for a couple of hours.

Thus, the analysis itself does not carry there is absolutely no danger in itself. Refusal to carry it out, on the contrary, poses a threat to the mother and child. If gestational diabetes is not detected early, it can significantly complicate the course of pregnancy.

Medical examinations and various tests accompany a person throughout his life, but this is especially true for women during pregnancy, when it is necessary to monitor not one organism, but two at once. AND one of the mandatory tests at the end of the second - beginning of the third trimester (the optimal period for this test is 16-26 weeks) is a glucose tolerance test.

The fact is that even a healthy woman who has never had diabetes mellitus may experience a special hidden type of disease during this period. This dangerous phenomenon, which harms not only the mother, but also the fetus, since it is not insulin, but glucose that enters the bloodstream, and the pancreas of the unborn child begins to work only closer to childbirth, and his body cannot cope with such an amount of carbohydrates.

With this form of diabetes, gestosis can develop, which negatively affects the development of almost all internal organs baby. It can also lead to asphyxia and death of the fetus while still in the womb. This disease is uncommon, but the potential for severe complications and the huge number of risk factors make appropriate testing necessary.

A glucose tolerance test detects the disease even when there are no symptoms characteristic of diabetes, and if it says that the blood sugar level is increased, further examination is necessary. At risk Pregnant women with increased weight, over 35 years of age, women with a congenital predisposition to diabetes, impaired metabolism, heart and vascular disease, as well as those whose previous pregnancies ended in the birth of a stillchild are included.

Contraindications for the test

Despite the importance of this test, there are a number of indications in which it is not carried out at all or temporarily:

• diseases of the gastrointestinal tract, as a result of which glucose absorption does not occur;
• allergic reaction to glucose;
• early ;
• late stages of pregnancy;
• inflammatory and infectious diseases(until recovery).

Preparing for the test

There is nothing difficult about preparing for the test. 3 days before the test, your lifestyle should not change, but be familiar. Then comes a period of fasting, that is from 8 to 14 hours you are allowed to drink only water. Also, medications that may somehow affect the test result are canceled the day before.

The test is carried out in the first half of the day, since the woman did not take any food throughout the night. Blood is drawn, most often from a vein, but possibly from a finger. Normal indicator should not exceed 6.7 mmol/l. Then, if the reading is normal, the woman is given a glucose solution. The amount of glucose depends on whether the test needs to be performed - 1-hour or 2-hour. If the waiting time is 1 hour, then dilute 50 grams of glucose in 300 milliliters of water, 2 hours - 75 grams.

The solution is very sweet and to make it easier to drink, it is usually slightly diluted with citric acid. After taking water with glucose, the woman lies down without unnecessary movements so that the body does not use energy and the results are not distorted. After the required time has passed, another blood sample is taken and the indicators are compared.

Normal glucose tolerance test values ​​during pregnancy

• The normal fasting value should not be more than 5.1 mmol/l.
• After a 1-hour test – 10.0 mmol/l.
• After two hours, the threshold is 8.5 mmol/l.

If the readings exceed the maximum permissible, then another test is performed a week later, and only after that can a diagnosis of diabetes be made and its treatment begin. Treating a woman with suspected diabetes endocrinologist.

The doctor prescribed you to undergo a glucose tolerance test, but you are afraid or do not know how this examination is carried out? In this article you will learn everything about GTT, its contraindications, we will dispel your doubts and tell you how to prepare for it.

A glucose tolerance test is an examination that helps determine a woman’s tendency to diabetes or detect its latent form.

In other words, this examination is called a “sugar load”. Thanks to this test, you can diagnose the disease in time and take action. necessary measures to avoid undesirable consequences.

Why take a glucose tolerance test during pregnancy?

• Statistics show that about 15% of pregnant women suffer from gestational diabetes, otherwise known as gestational diabetes.
• This disease, like many others, occurs against a background of weakening of the female body and increased stress on it during pregnancy.
• During the period of bearing a child, a woman’s body must produce more insulin, which is responsible for normal level blood sugar levels
• But the body does not always cope with this task, and then the amount of sugar increases and diabetes develops.

Is a glucose tolerance test required during pregnancy?

It is imperative to undergo a GTT examination if a woman falls into one of the following categories:

• was diagnosed with this disease in previous pregnancies
• if a pregnant woman has problems gaining weight - a body mass index above 30
• if the weight of previous children at birth was more than 4.5 kg
• if one of your blood relatives has this disease
• Sugar is present in urine test

If a woman is at risk, then a GTT examination should be carried out, as a rule, at 16-18 weeks and a second time at 24-28 weeks. If necessary, the test is performed again, but no later than 32 weeks.

Is it dangerous to perform a glucose tolerance test during pregnancy?

• Until 32 weeks, the glucose tolerance test is not dangerous for either the mother or the baby. Imagine eating a donut with sweet jam for breakfast
• Could it make you feel bad or could it somehow harm your health? Of course not! And the amount of glucose a woman needs to take is approximately equal to this breakfast
• But an unreasonable refusal of GTT can be harmful if elevated blood sugar is not detected in time and the necessary measures are not taken to normalize glucose levels

How and where to take a glucose tolerance test during pregnancy?

10-14 hours before the test, a pregnant woman should not eat, only drink clean water, in the morning the examination is carried out on an empty stomach.

Do not take any medications, not even vitamins, because... this may affect the results of the examination.

This examination is carried out in antenatal clinics and various private centers.

How is a glucose tolerance test performed during pregnancy?

• In the morning, a woman donates blood to determine her sugar level.
• If blood sugar is elevated at this stage of the examination, then the test is not performed further and a repeat examination is scheduled on another day.
• If the level is normal, the expectant mother is given a solution with 75-100 grams of glucose per glass of water at room temperature.
• After 1 hour and 2 hours, blood is drawn for analysis; if necessary, blood is drawn after 3 hours
• After 2 hours, the glucose level should normalize, but if it is elevated, then a repeat examination will be scheduled

It is important, for correct test results, to drink the glucose solution immediately, no longer than 5 minutes before. During the test, the pregnant woman should not leave the laboratory and completely avoid physical activity.

The glucose solution is sickly sweet, so a pregnant woman may feel sick. To prevent this from happening, the test is not performed if the woman is suffering from toxicosis.

When should you take a glucose tolerance test during pregnancy?

• The optimal time to undergo this examination is the period from 24 to 26 weeks of pregnancy
• In general, the test is carried out from the 24th to the 28th week, but no later than 32 weeks, because this test carries a serious burden on the pregnant woman’s body and in the later stages can be dangerous to the health of the woman and the fetus
• If a woman is at risk, the test is carried out at more early- at 16-18 weeks

Contraindications for glucose tolerance test during pregnancy

There are reasons why a woman should refuse to undergo a GTT examination, these include the following:

• if a woman suffers from serious liver disease, such as pancreatitis
• in the presence of dumping syndrome
• if a pregnant woman is diagnosed with Crohn's disease
• the expectant mother has peptic ulcers
• if on the day of the test the woman has symptoms of an “acute abdomen”
• Infectious diseases are present in the expectant mother's body
• presence of inflammatory processes
• The woman has been placed on strict bed rest
• period more than 32 weeks

Norm, results and interpretation of the glucose tolerance test during pregnancy

The blood glucose level of a pregnant woman is slightly higher than that of other people, which is necessary for the normal development of the fetus, but there are indicators that it should not exceed.

So, the diagnosis of “diabetes mellitus in pregnancy” is made based on the following examination results:

• during the first blood draw in the morning on an empty stomach - 5.1 mmol/l
• when taking blood an hour after taking a glucose solution - 10 mmol/l
• when drawing blood after 2 hours - 8.6 mmol/l
• when drawing blood after 3 hours - 7.8 mmol/l

• If during the first examination the blood glucose level was higher than the given values, then a repeat examination is carried out on another day.
• If suspicions are confirmed, the pregnant woman is diagnosed with gestational diabetes.
• If there are suspicions, but the test is normal, then the pregnant woman is prescribed to take it again after about 2 weeks to exclude erroneous results
• When diagnosing diabetes, the test is repeated after childbirth, or rather after 6 weeks, to identify its cause, i.e. Is it associated solely with pregnancy or perhaps the woman has developed real diabetes mellitus
• Treatment of gestational diabetes consists of adjusting the diet of the expectant mother; moderate physical activity will also be beneficial
• A pregnant woman will have to visit the doctor more often and undergo additional ultrasound examinations to monitor the baby's weight gain. Childbirth with this diagnosis is usually scheduled for 37-38 weeks of pregnancy

How and why to take a glucose tolerance test during pregnancy: tips and reviews

Let's summarize:

• The glucose tolerance test is a very necessary examination that reveals hidden forms of diabetes mellitus in pregnant women or a tendency to it
• The test is usually carried out at 24-28 weeks, it can be earlier or later if there is cause for concern, but no later than 32 weeks
• Blood sampling is carried out exclusively in the morning and on an empty stomach, the pregnant woman takes a glucose solution and then the analysis is repeated after an hour, two and three
• If blood glucose levels are elevated, the examination is repeated, and once the results are confirmed, a diagnosis is made
• GTT is not dangerous for a child or a pregnant woman, except in cases where the examination is contraindicated

Paying attention to your health will help the expectant mother safely carry and give birth to a healthy baby.

40 weeks of pregnancy is not only a time of waiting, hope, excitement and joy. During this period, the expectant mother also undergoes numerous examinations, and also takes all kinds of tests. The purpose of such careful monitoring is to monitor the course of pregnancy, as well as timely diagnosis of problems and correction of pathological conditions. Among the studies whose validity is controversial is the glucose tolerance test. How advisable is it to take this test for all expectant mothers without exception?

Glucose and its role in the body of a pregnant woman

The key source of energy for the lion's share of the body's cells is sugar. It is “brought” into the body by foods rich in carbohydrates, and some sugar (in the form of glycogen) is also secreted by the liver. The beneficial component enters the blood, which carries it throughout the body. However, glucose cannot penetrate the cells on its own; insulin comes to its aid.

Normal, insufficient or excessive production of this protein substance determines the glucose content in the blood - within the normal range or with a deviation in the direction of increase or decrease. Increased, as well as insufficient, inclusion of glucose in the blood has a negative effect on both the health, and, consequently, the well-being of the woman, and on the course of pregnancy.

• High glucose levels during pregnancy are fraught with the development of fetal pathologies, a sharp increase in the child’s weight, and metabolic disorders in a woman (including the development of gestational diabetes, late toxicosis).
• Insufficient presence of sugar in the blood often leads to disorders general condition expectant mother - headache, feeling of weakness, fatigue, increased sweating, visual impairment.

One of the tests to diagnose the level of sugar inclusion in the blood of a pregnant woman is a glucose test with an additional load.

Glucose tolerance test during pregnancy - justified need or unnecessary examination

Prescribing this type of examination to an expectant mother causes a negative reaction in many women, and this is quite understandable. The procedure often causes discomfort in the form of nausea and dizziness. In addition, the glucose load test is carried out in the morning, for several hours (about 3). At this time (and also the day before in preparation for the study), you should exclude the consumption of any kind of food, which also often poses a certain difficulty for a “pregnant” body. It is for these reasons that many pregnant women refuse to conduct research.
How justified is the purpose of this type of analysis?

Glucose tolerance during pregnancy. Who is at high risk?

Among the risk factors that require additional examination in the form of a test to identify glucose tolerance are:

• Excessive obesity in a pregnant woman (mass index exceeds 30).
• During a blood sugar test, which was carried out when the pregnant woman was registered, the inclusion of glucose in the blood was recorded at a level above 5.1 mmol/l.
• There is a history of a disorder in the form of gestational diabetes (during previous pregnancies).
• Urine analysis showed the presence of glucose in the urine during pregnancy.
• The pregnant woman has relatives (close) with established diabetes mellitus.
• The expectant mother is carrying a large fetus or has given birth to a large baby in the past.
• The pregnant woman’s age has “crossed” the threshold of 35 years.

The presence of at least one of the factors listed above is in favor of conducting a tolerance test. Moreover, the presence of “aggravating circumstances” is often an indication for prescribing a glucose tolerance test twice - when a woman applies for registration (classic analysis to determine sugar content) and in the second trimester of pregnancy.

When is it indicated to donate blood for glucose during pregnancy?

Finding the symptoms listed below should prompt you to expectant mother undergo an unscheduled examination with a carbohydrate load.

• Appearance in oral cavity metallic taste.
• The need to urinate frequently.
• Increased fatigue, constant fatigue.
• Elevated blood pressure readings.

The final decision on whether to conduct a glucose test is made, of course, by the woman, but she should listen to the recommendations of the doctor who is monitoring her pregnancy. Some conditions of a pregnant woman require additional attention, so you should not neglect the doctor’s advice. Gestational diabetes, which is not detected in a timely manner, threatens serious complications not only for the woman, but also for the child she is carrying. A proper diet combined with individual recommendations will negate Negative influence pathology.

Glucose test during pregnancy: preparation for the test

Proper preparation for analysis is one of the most important components of a reliable research result.

• A few days (three days is enough) before the test, the expectant mother should completely eliminate all fatty and spicy foods, coffee, cakes, and smoked foods from her diet. By the way, a woman “in position” should not abuse such delicacies the rest of the time. It is best to stick to a neutral diet.
• Taking medications can also affect the test results, resulting in a false result. This statement applies especially strictly to: multivitamins, medications containing iron, drugs to lower blood pressure, diuretics, corticosteroid hormones. When taking any medicines The pregnant woman is obliged to notify the doctor about the therapy.
• It is very important to maintain the usual mode of physical activity, not to “sleep”, but also not to be too zealous.
• The last meal on the eve of the test should occur at least 8 hours before (and preferably 10-14 hours before). During this period you can only drink water.
• It is also strictly prohibited to smoke and drink alcohol (which is already contraindicated for pregnant women).
• You should brush your teeth at night. Before taking the test, it is better to skip this hygienic procedure, because Some components of toothpaste can distort test results.
• Try to avoid increased anxiety and stressful situations.

How to take a glucose test during pregnancy

The optimal period for taking a stress test for sugar is considered to be the period from the 24th to the 28th week of gestation. The Carbohydrate Load Test procedure includes the following steps:

• Pregnant woman comes to medical institution and donates the first portion of venous blood on an empty stomach. Depending on the data obtained at the first stage, a decision is made on further research. So, if the glucose level is already exceeded, the exercise test is not performed. The woman is referred for further examination and clarification of the diagnosis with suspected gestational diabetes. If the sugar level is normal, a glucose tolerance test is prescribed.
• The second stage is glucose loading during pregnancy by oral administration of a glucose solution. A woman should drink warm water in an amount of 250-300 ml, in which 100 g or 75 g of dry glucose is diluted. The amount of monosaccharide is determined by the doctor ordering the study. 60 minutes after absorption of the glucose solution, the blood sugar concentration is measured. Alternative way administration of the solution can be an intravenous supply of the composition, although direct injection of glucose into the blood is rarely practiced.
• The third stage involves recording blood glucose numbers 2 hours after the carbohydrate load test.

The data obtained is checked against the standards and a conclusion is drawn about the state of health of the pregnant woman.

Glucose levels during pregnancy: interpretation of test results

Interpretation of test results is based on data obtained as a result of three measurements of the level of glucose in the blood. When assessing the result obtained, you can rely on the following criteria:

1. Indicators of blood sugar concentration when collecting biological material on an empty stomach and without load are:

• below 5.1 - 5.5 mmol/l (taking into account laboratory reference values) is normal;
• in the range of 5.6 - 6.0 mmol/l - deviations in glucose tolerance;
• 6.1 mmol/l or more - suspicion of diabetes (in a number of laboratories this indicator is in the range of 7 mmol/l and above).

2. Measuring glucose incorporation 60 minutes after an additional carbohydrate load:

• less than 10 mmol/l is normal;
• in the range of 10.1 - 11.1 mmol/l - deviations in glucose tolerance;
• 11.1 mmol/l or more - suspected diabetes.

3. Fixing the sugar content 120 minutes after a glucose load:

• less than 8.5 mmol/l indicates normal;
• in the range of 8.6 - 11.1 mmol/l - deviations in glucose tolerance;
• 11.1 mmol/l and above is a clear deviation, possibly gestational diabetes.

Table for assessing glucose levels during pregnancy: norm and deviations

Depending on the type of research method, the normal limits in different laboratories may vary slightly. In view of this, it is very important to evaluate the result solely in accordance with the criteria of a given research center.

Analysis result: increased glucose during pregnancy

Even if the test results reveal a discrepancy with the normal criteria, you should not immediately panic. This violation may be due to:

• Increased hormonal activity of the adrenal glands.
• Excessive activity of the thyroid gland.
• Pathologies of the pancreas.
• Long-term use of glucocorticoids.

Additional examinations will help clarify the cause of the violations.

Test result: low glucose during pregnancy

A downward deviation is less common than an elevated glucose level. This violation may be associated with:

• Severe form of early toxicosis.
• Unbalanced diet of the expectant mother.
• Lack of body weight in a pregnant woman.

A reduced sugar content, in addition to a violation of the general condition, can also lead to increased production of ketone bodies, which have an effect on female body toxic effects. Drug therapy for low sugar levels is not prescribed. A woman is advised to eat a balanced diet with sufficient calories. In some cases, glucose drips may be prescribed.

Glucose test during pregnancy: contraindications for testing

A referral for a glucose load is issued by a doctor who is observing the expectant mother. A number of conditions are a contraindication to this type of research. These include:

• Gestation period is more than 28 weeks. Conducting a tolerance test in the third trimester of expecting a baby can be dangerous for him. That is why the study can be scheduled in the period from the 28th to the 32nd week of gestation of a toddler strictly for medical reasons. After the 32nd week, a glucose load is never prescribed.
• Glucose intolerance.
• Presence of infection (including mild colds), foci of inflammation.
• Bed rest for a pregnant woman. To adequately assess the test results, moderate physical activity of the expectant mother is necessary.
• Exacerbation of pancreatitis - inflammation of the pancreas.
• Ulcerative lesions of the gastrointestinal tract.
• Therapy with drugs aimed at increasing glycemic levels. Conducting research in this case will be pointless.
• If the blood sugar level (when taken on an empty stomach) exceeds 7.0 mmol/l. The exact norm depends on the criteria of a particular laboratory (it could be 5.1 mmol/l).
• Severe toxicosis. The analysis procedure is unpleasant and can further aggravate the manifestations of toxicosis.

Additional sugar loading by performing a glucose test during pregnancy is a mandatory test. However, the decision on the need to conduct research in each individual case should be made by the doctor and the woman together.

Content

A woman has to undergo many tests while carrying a child. This is necessary to make sure that everything is fine with the fetus and the expectant mother, and that the baby’s development is normal. One of these tests is the pregnancy glucose tolerance test (GTT) to determine glycemia, which must be taken after special training. Pregnant women definitely need to know why this test is performed and what its results mean.

What is a glucose tolerance test during pregnancy?

The full name of the test is oral glucose tolerance test in pregnancy (OGTT). It is carried out by drawing blood from a vein. Its purpose is to determine the disorder of carbohydrate metabolism in the mother. The test shows how much a woman’s body is able to control blood sugar levels. If the indicator exceeds the norm, then the woman is given a disappointing diagnosis - gestational diabetes mellitus.

Why is it needed?

This disease can develop in pregnant women. Carrying a child provokes many changes: metabolic disorders, hormonal changes in the body. Pregnancy can cause disruption of the adrenal glands, the organ responsible for producing insulin. Since gestational diabetes occurs without symptoms, the test is necessary to identify the disease, otherwise complications may begin.

Mandatory or not

Sometimes pregnant women ask whether it is necessary to carry out this oral test, because this is unnecessary discomfort. You can skip the glucose tolerance test during pregnancy. However, the expectant mother must understand that in this way she is endangering her unborn child. Doctors strongly recommend undergoing the test to make sure there is no gestational diabetes mellitus. A woman should know that the test itself is safe for her health and the health of her child.

For what period

A blood glucose test is performed once during pregnancy. The test is taken between 24 and 28 weeks of pregnancy. The optimal period is 24-26 weeks, but it can be done a little later. If the result is disappointing, the study is carried out again in the 3rd trimester for 32 weeks. If a woman is already at risk for gestational diabetes mellitus, she will have to take the test twice:

• when registering at the antenatal clinic;
• between 24-28 weeks of pregnancy.

How to donate blood for glucose during pregnancy

The test is performed once during the entire pregnancy period, with the exception of special cases. The expectant mother must follow all the rules for taking the glucose tolerance test, otherwise the result will be erroneous. If a woman was nervous the day before, then it is better for her to calm down and postpone the test for a few days if possible. The test is safe, the amount of sugar that needs to be consumed is equal to a lunch with a high carbohydrate content.

Preparation

Before taking the test, a pregnant woman must follow some rules in order to get a true result. She should not go on a diet three days before the test; on the contrary, she should eat 150 g of carbohydrates per day. During these periods, she should temporarily stop taking vitamins and glucocorticoids. You cannot eat anything 8-12 hours before the test, so the test is carried out in the morning on an empty stomach. The amount of water is not limited.

How is it carried out?

The glucose test during pregnancy is carried out in two stages. The first time blood is drawn is on an empty stomach. If everything is in order, then the woman needs to undergo the second stage of analysis. To do this, she needs to drink a glucose solution. It is done as follows: 75 grams of glucose in powder form are diluted in 200-300 ml of pure still water. The drink turns out to be very sweet, sometimes pregnant women feel nauseous and want to vomit. You need to overcome the unpleasant sensations; to do this, it is recommended not to drink the glucose solution in one gulp.

After drinking the drink to increase the concentration of glucose in the blood, the woman should wait an hour or two. At this time, it is forbidden to walk or move actively. The expectant mother should be at rest. It is recommended to sit and read. Once the time is up, the doctor takes a second blood sample from the vein and performs a test. After this, the woman waits for the result and goes to her gynecologist.

Contraindications

Sometimes a woman is refused a glucose tolerance test. This happens for a number of reasons:

• recent infectious or inflammatory disease;
• nervousness, stressful state;
• bed rest;
• severe toxicosis;
• with exacerbation of chronic pancreatitis;
• non-compliance with established rules for conducting analysis.

Price for glucose tolerance test during pregnancy

A glucose tolerance test during pregnancy is done free of charge at the antenatal clinic where the pregnant woman is being observed. If the expectant mother does not have the opportunity to undergo testing there, or for some reason she does not want to do it there, then she can contact a paid medical laboratory. The cost of the test varies, for example, in Moscow or St. Petersburg the price ranges from 350 rubles to 14 thousand.