Some common blood tests require you to fast beforehand to help make sure the test results are as accurate as possible. You can typically still drink water during this period, but is drinking tea ...

Blood sugar tests measure the amount of glucose in your blood and help detect prediabetes, diabetes, and blood sugar ...

You can consume nothing but water for at least 8 hours before a fasting glucose test. You may also need to follow a low carb diet and avoid exercise for some time before. A fasting glucose test ...

Q. I don’t have diabetes or pre-diabetes, do you know why my healthcare provider ordered a fasting insulin test?