Why Can't You Drink Water Before A Fasting Blood Test

Fasting means nothing to eat drink except water smoke or chew during these 8-10 hours.

Why can't you drink water before a fasting blood test. This means you wont be able to drink tea until after your blood is drawn. Water is fine before a blood glucose test but dont eat any food or drink other liquids which might falsely elevate the glucose level in the blood. If you are dehydrated when the nurse or physician performs your fasting blood test it can be difficult for them to draw blood from your veins.

52k views Answered 2. Classes can teach how to draw blood but they cant change the fact that food can alter a blood tests results. When you eat and drink normally those foods and beverages are absorbed into your bloodstream.

Some people think they should avoid water before a blood test not only is this untrue its unhealthy. Yes you can and it is better to do so because. You could be recommended to take medication for cholesterol and high triglycerides because of not fasting.

Yes you can drink water while fasting before a blood testin fact drinking plenty of water can help ensure that you receive accurate test results. The more water you drink the plumper your veins. Be sure to stay hydrated before your test by drinking the recommended amount of water for your weight and activity level.

In these cases your doctor will instruct you not to eat or drink anything except water in the hours leading up to the test. You also may need to. You may also be told not to smoke before your test.

Not drinking enough water before the blood test can have a dehydrating effect. Usually you will be required to fast before a blood glucose test. A high reading may indicate liver disease bile duct problems or alcohol abuse.