For a fasting blood glucose test, you can’t eat or drink anything but water for eight hours before your test. You may want to schedule a fasting glucose test first thing in the morning so you don’t have to fast during the day. You may eat and drink before a random glucose test.
Does drinking water affect blood sugar test?
Drinking water before a fasting blood sugar test can actually decrease blood sugar levels, or at least prevent levels from getting too high. Water allows more glucose to be flushed out of the blood.
Can I drink water before my sugar test?
DO NOT eat or drink anything except WATER for at least 8 hours before the test. You may drink plain water ONLY. Do NOT drink coffee, tea, soda (regular or diet) or any other beverages. Do NOT smoke, chew gum (regular or sugar-free) or exercise.
Does drinking water before blood test affect results?
Water: It is important to keep drinking plenty of water when fasting, to stay hydrated. Water does not affect the results of a blood test and is acceptable to drink when a person needs to fast.
How much water should you drink before a blood test?
This is generally the case for blood tests and surgeries. If your phlebotomy specialist says it is OK to drink water before getting blood drawn, try to drink the recommended daily amount of water, which is 64 ounces. Before you donate, drink a glass of water that’s about 16 ounces.
Does water dilute blood sugar?
Drinking water can lower blood sugar levels by diluting the amount of glucose (sugar) in the blood stream.
How much water should you drink to lower blood sugar?
Drinking enough water can help your body eliminate excess glucose through urine. The Institute of Medicine recommends adult men drink about 13 cups (3.08 liters) of day and women drink about 9 cups (2.13 liters).
Can I drink water while intermittent fasting?
You can drink water, coffee, and other zero-calorie beverages during the fast, which can help reduce feelings of hunger. It’s very important to primarily eat healthy foods during your eating window. This method won’t work if you eat lots of processed foods or an excessive number of calories.
What should a 12 hour fasting blood sugar be?
After a fast of 8 to 12 hours, your blood is drawn to measure the blood glucose level. A blood glucose level measuring below 6 mmol/L (100 mg/dL) is normal. If your blood glucose level is between 6.0 and 6.9 mmol/L (100 mg/dL and 125 mg/dL), you have prediabetes (impaired fasting glucose).
Can I brush my teeth when fasting for a blood test?
May I brush my teeth? Yes, brushing your teeth is permitted unless otherwise indicated by your physician, assuming you do not use large amounts of toothpaste and swallow the lather.
How do you hydrate before a blood test?
Before Your Blood Test
Fasting for a blood test entails avoiding all food and beverages (except for water) for 8 to 12 hours prior to the test. Drink plenty of water and take your medications as usual.