What Your Blood Glucose Level Results Mean?

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You’re Blood Glucose Results

How do you find out?
What do the numbers mean?
The only way to know your blood glucose levels are in the normal range is through a blood test. The sample can be taken by a GP or at a pathology laboratory.

You may be asked to fast for the test or it could be taken without fasting (random). The diagnosis of diabetes or pre-diabetes, also known as Impaired Fasting Glucose (IFG) or Impaired Glucose Tolerance (IGT), must always be made on a laboratory blood glucose test. The laboratory test is based on a blood sample taken from the vein (venous plasma sample). A finger prick test is not adequate for the diagnosis of these conditions.

Did your blood glucose test require fasting?

Fasting results:

If your blood glucose result was less than 5.5 Diabetes is unlikely. It is recommended that you have your blood glucose retested in three years.
If your blood glucose result was between 5.5 – 6.9 the result requires further investigation. It is recommended that you have an Oral Glucose Tolerance test (OGTT)*.
The OGTT could show a) diabetes is unlikely b) definite diabetes or c) a condition called pre-diabetes also known as Impaired Fasting Glucose (IFG) or Impaired Glucose Tolerance (IGT). Both IFG and IGT are risk factors for diabetes so the OGTT should be repeated in one year. *This requires fasting for a blood glucose test followed by special glucose drink and then another blood glucose test taken two hours after the drink.

If your blood glucose result was over 7.0 another fasting test is required. If this test shows blood glucose of 7.0 and over, then you have diabetes. If this test shows a blood glucose of less than 7.0 an Oral Glucose Tolerance Test (OGTT)* is recommended. *This requires fasting for a blood glucose test followed by a special glucose drink and then another blood glucose test taken two hours after the drink.

Or was your blood glucose test random and without fasting?

Random results:

If your blood glucose result was less than 5.5 Diabetes is unlikely. It is recommended that you have your blood glucose retested in three years.
If your blood glucose result was between 5.5 – 11.0 An Oral Glucose Tolerance Test (OGTT)* is required. The OGTT could show a) diabetes is unlikely b) definite diabetes or c) conditions called pre-diabetes also known as Impaired Fasting Glucose (IFG) or Impaired Glucose Tolerance (IGT). Both IFG and IGT are risk factors for diabetes so the OGTT should be repeated in one year.
If your blood glucose result was 11.0 and over a fasting blood glucose test is required. If the fasting result shows blood glucose of 7.0 and over then you have diabetes.
If the result shows a blood glucose of less than 7.0 an Oral Glucose Tolerance Test (OGTT)* is recommended.

You can find out if you are at risk of diabetes by answering the risk assessment questions:

Example:-

I am of Chinese, Indian or Pacific Islander heritage and over 35
I have a high blood pressure
I have heart disease
I have a family history of diabetes
I am overweight
I have had diabetes in pregnancy
I am over 55
I am Aboriginal or Torres Strait Islander and over 35
I have polycystic ovary syndrome. If you have answered yes to one or more of these questions, consult your GP.

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