In general, it is recommended that you fast (nothing to eat or drink except water) for at least 8 hours before having a blood glucose test. for people with. For tests on lipids and glucose, only water is okay to drink within 14 hours before a blood test. drinks may have sugar and fat, which affects the blood.. Can i drink tea if fasting for a glucose lipid panel blood test? last updated: feb 18, 2015 | by nancy clarke. getting your blood drawn requires a trip to.

When i would go for a1c tests, they said water might dilute the amount of glucose in my blood. therefore giving a false reading. i know when i drink lots of water. Can you drink black coffee before a blood test that requires fasting?. You are here: common health questions; can i eat and drink before having a blood test? can i eat and drink before having a blood test?.

Your doctor may ask you to take a fasting blood test to determine your cholesterol or blood sugar levels. the process of fasting ensures that the results. The contents of this website are the opinions of dr. ben kim unless otherwise noted. the information on this website is not intended as personalized medical advice.

I would think your lows are caused more by your working out than by drinking water alone. having low sugars (low enough that the meter doesnt read them) is dangerous.