This test is performed for a pregnant woman, to detect the presence of gestational diabetes.
This test requires drinking about 226 grams of fluid mascara after a fast 8 hours.
Sugar level is measured in the blood before fluid intake and then every hour after fluid intake for a period of 3 hours. If there is a rise in the level of sugar more than the expected rise may be Ms. infected with sugar.
Glucose tolerance test:
General description:
The glucose tolerance test, also known as the "oral glucose tolerance test," measures the body's response to sugar (glucose). This test can be used as a screening test for type 2 diabetes. However, more frequently, a modified version of the glucose tolerance test is used to diagnose gestational diabetes (a type of diabetes that appears during pregnancy). pregnancy).
Why it is done:
The glucose tolerance test identifies abnormalities in the way the body administers glucose after a meal (usually, before fasting, the glucose level becomes abnormal).
Risks:
The risks related to obtaining a blood sample are minor. After blood collection, you may have bruising or bleeding in the area. You may also feel dizzy or lightheaded. In some cases, an infection may occur after the procedure.
How to prepare:
Food and medication:
It is important that you eat and drink as you usually do in the days next to the glucose tolerance test. Notify the doctor if you feel sick or if you are receiving any medication, as these factors could influence the test results.
What you can expect:
Before the procedure:
You will not be able to eat or drink anything in the eight hours prior to the test. It would be convenient for you to keep fasting at night and schedule the test early for the next morning.
During the procedure:
The glucose tolerance test is performed in several stages. When you arrive at the doctor's laboratory or office, a member of the health care team will take a blood sample from a vein in your arm. This blood sample will be used to measure your fasting blood glucose level.
Type 2 diabetes:
If you are being tested to find out if you have type 2 diabetes:
- You should drink about 8 ounces (approximately 237 milliliters) of a syrup-like glucose solution that contains 2.6 ounces (75 grams) of sugar
- Two hours later, your blood glucose level will be measured again
Gestational diabetes:
The American College of Obstetricians and Gynecologists recommends a one-hour blood glucose tolerance test to detect gestational diabetes in low-risk pregnant women who are in the 24th to 28th week of pregnancy.
Your doctor may recommend you take this screening test before if you have a higher risk of developing gestational diabetes. Among the risk factors are the following:
- Gestational diabetes in a previous pregnancy.
- Family history of diabetes.
- Obesity
- Having a disease associated with the development of diabetes, for example, metabolic syndrome or polycystic ovarian syndrome.
If the doctor determines that you are at risk or have a suspicious value on the one-hour test, they may recommend that you undergo a three-hour glucose tolerance test.
Three hour test:
- You will be asked to attend the fasting test, that is, you should not eat or drink anything in the eight hours before the test. A blood sample will be taken to determine the fasting blood sugar level.
- You should drink about 8 ounces (approximately 237 milliliters) of a glucose solution that contains 3.5 ounces (100 grams) of sugar.
- Your blood glucose level will be reassessed two to three hours after you drink the solution.
After drinking the glucose solution, you may have to stay in the doctor's laboratory or office while waiting for your blood glucose level to be measured again.
After the procedure:
Once you have done the glucose tolerance test, you can immediately resume your usual activities.
Results:
The results of the oral glucose tolerance test are given in milligrams per deciliter (mg / dL) or millimoles per liter (mmol / L).
Type 2 diabetes
If you are being tested to find out if you have type 2 diabetes, two hours after drinking the glucose solution:
- A normal blood glucose level is less than 140 mg / dL (7.8 mmol / L).
- A blood glucose level that ranges between 140 and 199 mg / dL (between 7.8 and 11 mmol / L) is considered a glucose tolerance disorder or prediabetes. If you have prediabetes, you run the risk of developing type 2 diabetes at some time. You also run the risk of developing some heart disease even if you don't develop diabetes.
- A blood glucose level of 200 mg / dL (11.1 mmol / L) or more could indicate the presence of diabetes.
Glucose tolerance test:
General description:
The glucose tolerance test, also known as the "oral glucose tolerance test," measures the body's response to sugar (glucose). This test can be used as a screening test for type 2 diabetes. However, more frequently, a modified version of the glucose tolerance test is used to diagnose gestational diabetes (a type of diabetes that appears during pregnancy). pregnancy).
Why it is done:
The glucose tolerance test identifies abnormalities in the way the body administers glucose after a meal (usually, before fasting, the glucose level becomes abnormal).
Risks:
The risks related to obtaining a blood sample are minor. After blood collection, you may have bruising or bleeding in the area. You may also feel dizzy or lightheaded. In some cases, an infection may occur after the procedure.
How to prepare:
Food and medication:
It is important that you eat and drink as you usually do in the days next to the glucose tolerance test. Notify the doctor if you feel sick or if you are receiving any medication, as these factors could influence the test results.
What you can expect:
Before the procedure:
You will not be able to eat or drink anything in the eight hours prior to the test. It would be convenient for you to keep fasting at night and schedule the test early for the next morning.
During the procedure:
The glucose tolerance test is performed in several stages. When you arrive at the doctor's laboratory or office, a member of the health care team will take a blood sample from a vein in your arm. This blood sample will be used to measure your fasting blood glucose level.
Type 2 diabetes:
If you are being tested to find out if you have type 2 diabetes:
- You should drink about 8 ounces (approximately 237 milliliters) of a syrup-like glucose solution that contains 2.6 ounces (75 grams) of sugar
- Two hours later, your blood glucose level will be measured again
Gestational diabetes:
The American College of Obstetricians and Gynecologists recommends a one-hour blood glucose tolerance test to detect gestational diabetes in low-risk pregnant women who are in the 24th to 28th week of pregnancy.
Your doctor may recommend you take this screening test before if you have a higher risk of developing gestational diabetes. Among the risk factors are the following:
- Gestational diabetes in a previous pregnancy.
- Family history of diabetes.
- Obesity
- Having a disease associated with the development of diabetes, for example, metabolic syndrome or polycystic ovarian syndrome.
If the doctor determines that you are at risk or have a suspicious value on the one-hour test, they may recommend that you undergo a three-hour glucose tolerance test.
Three hour test:
- You will be asked to attend the fasting test, that is, you should not eat or drink anything in the eight hours before the test. A blood sample will be taken to determine the fasting blood sugar level.
- You should drink about 8 ounces (approximately 237 milliliters) of a glucose solution that contains 3.5 ounces (100 grams) of sugar.
- Your blood glucose level will be reassessed two to three hours after you drink the solution.
After drinking the glucose solution, you may have to stay in the doctor's laboratory or office while waiting for your blood glucose level to be measured again.
After the procedure:
Once you have done the glucose tolerance test, you can immediately resume your usual activities.
Results:
The results of the oral glucose tolerance test are given in milligrams per deciliter (mg / dL) or millimoles per liter (mmol / L).
Type 2 diabetes
If you are being tested to find out if you have type 2 diabetes, two hours after drinking the glucose solution:
- A normal blood glucose level is less than 140 mg / dL (7.8 mmol / L).
- A blood glucose level that ranges between 140 and 199 mg / dL (between 7.8 and 11 mmol / L) is considered a glucose tolerance disorder or prediabetes. If you have prediabetes, you run the risk of developing type 2 diabetes at some time. You also run the risk of developing some heart disease even if you don't develop diabetes.
- A blood glucose level of 200 mg / dL (11.1 mmol / L) or more could indicate the presence of diabetes.
If the results of the glucose tolerance test indicate the presence of type 2 diabetes, the doctor may repeat the test another day or use another blood test to confirm the diagnosis. Various factors can affect the accuracy of the glucose tolerance test result, including illness, activity level and certain medications.
Gestational diabetes:
If you are having the test to detect if you have gestational diabetes, the doctor will take into account the results of each blood glucose test.
At Mayo Clinic, if the blood glucose level is greater than 140 mg / dL (7.8 mmol / L) after the one-hour test, the doctor will recommend the three-hour test. If your blood glucose level exceeds 190 mg / dL (10.6 mmol / L) after the one hour test, you will be diagnosed with gestational diabetes.
Three hour test:
- A normal fasting blood glucose level is less than 95 mg / dL (5.3 mmol / L).
- One hour after drinking the glucose solution, a normal blood glucose level is less than 180 mg / dL (10 mmol / L).
- Two hours after drinking the glucose solution, a normal blood glucose level is less than 155 mg / dL (8.6 mmol / L).
- Three hours after drinking the glucose solution, a normal blood glucose level is less than 140 mg / dL (7.8 mmol / L).
If one of the tests yields a result above the normal value, it is likely that you will be tested again in four weeks. If two or more results are higher than normal, you will be diagnosed with gestational diabetes.
If you are diagnosed with gestational diabetes, you can avoid complications if you carefully monitor the blood glucose level during the rest of the pregnancy.
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