Yes, you can drink water while fasting for blood work. Drinking plain water is actually recommended because it helps keep you hydrated and makes it easier to draw blood by plumping your veins. However, you should avoid any other beverages like coffee, juice, sodas, or flavored water, as these can affect the test results. The typical fasting period before blood work is 8 to 12 hours, during which you should only consume water and avoid food, smoking, gum, and exercise unless your doctor instructs otherwise. Once the blood test is done, you can eat and drink normally again.
