Fasting Plasma Glucose

A fasting plasma glucose test, also known as a fasting glucose test (FGT), is a test that can be used to help diagnose diabetes or pre-diabetes.
The test is a simple blood test taken after several hours of fasting.

How to prepare for the test: 

A fasting glucose test will be performed in the morning as this provides the body with adequate time to fast.
The NHS advises people who are having a fasting glucose test not to eat or drink anything except water for 8 to 10 hours before the test is performed.
The test requires a blood sample to be taken from the patients arm.

What to Expect: 

Normal: 6.0 and below (below 110mg/dl)
Impaired fasting glucose: Between 6.1 and 6.9 mmol/L (between 110mg/dl and 125mg/dl)
Diabetic: 7.0 mmol/L and above (126mg/dl and above)
Impaired fasting glucose is a form of pre-diabetes.