Fasting Blood Sugar Test

This test shows how well your body uses sugar called glucose. This test may be done to check for diabetes.

To Prepare

Do not eat or drink anything, including water, after midnight before the test. This includes coffee, gum, candy and mints.

Do not smoke after midnight before the test.

If you are to take your medicines the morning of the test, take them with sips of water only.

During the Test

A blood sample is taken with a needle from your arm.

After the Test

You can eat and drink your normal diet.

Test results are sent to your doctor. Your doctor will share the results with you.