Sage-Tips

What are indications and contraindication for oral glucose tolerance test?

This test should NOT be performed in patients who fulfil the criteria for diabetes mellitus. These are 1) a fasting plasma glucose >7.0 mmol/L on two or more occasions or 2) clinical symptoms of diabetes e.g. polydipsia, polyuria, ketonuria and rapid weight loss with a random plasma glucose of >11.1 mmol/L.

What is the purpose of the oral glucose tolerance test OGTT )?

The glucose tolerance test, also known as the oral glucose tolerance test, measures your body’s response to sugar (glucose). The glucose tolerance test can be used to screen for type 2 diabetes.

When is oral glucose tolerance test done?

This test checks for gestational diabetes. Most pregnant women have a glucose screening test between 24 and 28 weeks of pregnancy. The test may be done earlier if you have a high glucose level in your urine during your routine prenatal visits, or if you have a high risk for diabetes.

What is the principle of OGTT?

PRINCIPLE/PURPOSE: A glucose tolerance test is the administration of glucose in a controlled and defined environment to determine how quickly it is cleared from the blood. The test is usually used to test for diabetes, insulin resistance, and sometimes reactive hypoglycemia.

What tests should be done to evaluate the patient’s glucose tolerance?

An OGTT is frequently needed to confirm or exclude an abnormality of glucose tolerance in asymptomatic people. An OGTT should be used in individuals who are suspected of having diabetes and who have a fasting venous plasma glucose of 6.1-6.9 mmol/L, to determine glucose tolerance status.

What diagnostic tests are used to diagnose and monitor diabetes mellitus and its complications?

Your doctor will have you take one or more of the following blood tests to confirm the diagnosis:

• A1C Test. The A1C test measures your average blood sugar level over the past 2 or 3 months.
• Fasting Blood Sugar Test.
• Glucose Tolerance Test.
• Random Blood Sugar Test.
• Glucose Screening Test.
• Glucose Tolerance Test.

What is the name of the glucose test?

What is the A1C test? The A1C test is a blood test that provides information about your average levels of blood glucose, also called blood sugar, over the past 3 months.

What type of patient preparation is required for an oral glucose tolerance test?

Patient Preparation Patient should be active and eat a regular diet that includes at least 150 grams of carbohydrate daily for three days prior to the test. Patient should be instructed not to eat or drink anything except water for at least eight hours and not more than 14 hours before the test.

How is oral glucose tolerance test carried out?

With an oral glucose tolerance test, the person fasts overnight (at least 8 hours, but not more than 16 hours). The next morning, the fasting plasma glucose is tested. After this test, the person receives a dose of oral glucose (the dose depends upon the length of the test).

Why would I need an oral glucose tolerance test?

Obesity

Close family member with diabetes

High blood pressure

High triglycerides (a type of fat in the blood)

Polycystic ovarian syndrome (which causes menstrual problems)

Delivered a baby weighing over 4kilos (9 pounds)

Gestational diabetes during a previous pregnancy

What does an oral glucose tolerance test tell you?

The oral glucose tolerance test (OGTT) was the gold standard for making the diagnosis of type 2 diabetes.

It is still commonly used during pregnancy for diagnosing gestational diabetes.

With an oral glucose tolerance test,the person fasts overnight (at least 8 hours,but not more than 16 hours).

The next morning,the fasting plasma glucose is tested.

Why to use the oral glucose tolerance test?

Oral Glucose Tolerance Test Uses, Procedure and Results Purpose of Test. The OGTT evaluates how the body manages glucose after a meal. Risks and Contraindications. The OGTT is a safe and minimally invasive test that requires two to four blood draws. Before the Test. During the Test. After the Test. Interpreting the Results.

How should I prepare for an oral glucose tolerance test?

As mentioned previously, preparation for the oral glucose tolerance test involves fasting overnight (from 8 to 16 hours) and participating normally in activities of daily living. The individual should eat and drink as they normally do prior to the test. The morning of the test, the person should not consume caffeine or smoke.