Follow your clinician’s instructions exactly before the test
Ask whether you need to fast
Avoid eating or drinking anything except water if fasting is required
Avoid smoking before the test
Avoid chewing gum or mints before the test
Avoid strenuous exercise before the test
Eat normally in the days before the test unless told otherwise
Stay hydrated with water
Take prescribed medications only as directed by your clinician
Tell the clinic about all medications and supplements you take
Arrive on time for the appointment
Rest quietly during the waiting period
Do not eat, drink, or exercise during the screening period unless instructed
If you feel unwell, contact your clinician before the test
If you have questions about the preparation, ask the testing clinic beforehand