Coffee Before Blood Test

You need that cup of caffeinated energy.

Coffee before blood test. Its recommended that you avoid coffee and other liquids during your fast McKnight said. Coffee interferes with blood test results as it contains caffeine and soluble plant matter. You may also be told not to smoke before your test.

Caffeine can temporarily raise blood sugar levels resulting to an inaccurate fasting blood sugar FBS result. If it was for serum glucose then 8 hours would probably be long enough to wait. You need only plain water without added vitamins flavoring or carbonation to achieve the correct fluid and electrolyte balance in your blood chemistry prior to fasting labs.

Drinking coffee before blood test can affect the results of tests that measure blood sugar and cholesterol levels. Drinking coffee before taking a blood test can alter your glucose levels and mislead your doctor into thinking you may be suffering from high blood. And you probably know the drill.

Getting ready for a blood test may involve abstaining from coffee and other breakfast favorites if your doctor tells you to fast. Even though black coffee has a low calorie content it can still interfere with the results of a blood draw. Fasting Before a Blood Test.

McKnight also mentioned the food or drinks you consume the day or night before a blood test does not impact your test results unlike what you eat or drink the morning of your test. But your stomach is growling and you have serious caffeine withdrawal hours before you roll up your sleeve. Coffee is NOT recommended before a fasting glucose test.

Chewing gum even if it is sugar-free should be avoided when fasting for a blood test. Answer 1 of 3. You can drink coffee before blood work depends on the specific test that is being done.