What do I need to do before the test?
- You must have nothing to eat from midnight the night before your test.
- You may drink plain water freely.
What does the test involve?
- A cannula, a fine plastic tube may be inserted into a vein in your arm to take blood from.
- A baseline blood sample will be taken and you will then be required to drink a very sweet sugary drink.
- You will have a blood test and finger prick test every 30 minutes during this investigation.
How long will the test take?
- The test will take approximately 2½ hours to complete.
Side-effects
- There are very few side effects from this test, some people may feel a little sick or dizzy, but this usually passes quickly.
When will I get the results?
- The results of this test will be reviewed by your doctor and discussed with you at your next appointment.
Endocrine Day Unit
If you have any questions you can contact the Endocrine Day Unit by telephone or email.
