Glucose Tolerance Test (GTT) Proposes: Procedure and Risks

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            Glucose Tolerance Test


GTT stands for Glucose Tolerance Test, also known as oral  glucose tolerance test (i.e. OGTT) is a lab test.
It measures your body's reaction to sugar (i. e Glucose) and checks how your body moves the sugar from blood into tissues.
Glucose Tolerance Test , Preparation of GTT

Glucose Tolerance Test


Purpose of GTT

This test is used to diagnose diabetes specially to screen for type 2 diabetes also can be used to diagnose gestational diabetes (during pregnancy).This test mainly checks the abnormalities of glucose in your blood before fasting and after meal.

  • A woman is having diabetes during pregnancy and her glucose level is corrected after pregnancy she will be also tested for this test
  •  Individuals who have diabetes in their urine but have no symptoms
  • People with a family history of diabetes
  • Individuals who do not have any symptoms of diabetes But the examination of their eyes or the kidneys showed a change of sugar Later if there are symptoms of narrowing of the blood vessels So this test is a mandatory for them
  • Individuals who have not been the glucose level normal in their past
  • People who are obese

Preparation of GTT

  • Make sure to eat and drink normally for some days before this test.
  • Ask your doctor, if you having medication or having a critical disease such as throat cancer or any other because critical disease or having medication can affect your body and the test result as well.
  • Don't eat or drink for 08 hours before the test. You might want to fast overnight.



Procedure of OGTT

  • First, minimum 1 ml blood is taken from the vein having fasting.
  • The patient is given about 75 grams of glucose mixed with water
After drinking glucose, the patient may have a relapse and may perform its usual activities for 1 hour.
  • An hour later, Patient's sample is taken (Labelled as 1st sample).
  • Now every hour a blood sample is taken and a total of five samples are obtained.
Procedure of OGTT, Prparation for GTT
Procedure of OGTT

Result Graph

Let's see a normal report (result graph) of OGTT .....

             

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