I understand your doubt about Glucose testing. This test is ordered to measure the amount of glucose in the blood to detect both hyperglycemia and hypoglycemia, diagnose diabetes or monitor glucose levels in persons with diabetes.
Blood glucose may be measured on a fasting basis, you are not supposed to eat for the last 8 hours, however water would be fine. I hope I cleared your doubt.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.