Can U Drink Coffee Before A Fasting Blood Test

Coffee affects digestion and can also affect the results of a blood test.

Can u drink coffee before a fasting blood test. Some doctors say yes to black coffee even before a cholesterol test as long as you dont add cream or sugar. Even if you drink it black coffee can interfere with blood test results. Certain blood tests require fasting beforehand.

Drinking a cup of coffee before a blood test that require to be fasting is not allowed because coffee can alter the hormonal balance of the body which lead to abnormal testing results at the end. Common clinical recommendations direct patients to report fasted when blood work eg triglycerides TG glucose Glu will take place which typically excludes black coffee consumption. If your healthcare provider has instructed you to fast before your upcoming test it means that you should not eat or drink anything besides water for the specified amount of time before having your blood drawn.

Therefore avoid drinking coffee during the fasting period especially if you are expecting a very accurate blood test result that is important if you are suspected from a heart disease or cardiovascular issue. 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. While you may consider black coffee before a blood test little more than water drinking it causes you to absorb caffeine and other organic compounds into your bloodstream.

Fast for eight to 12 hours before having your blood drawn. Effects of Water on Blood Test Results. Fasting before blood tests.

Drinking Coffee Eating and More. Its OK to drink a cup of plain black coffee before a cholesterol test. However its ok to drink coffee before a random glucose test.

Only water is allowed for certain tests otherwise an inaccurate reading may result. You never know what kind of nutrient value or additives are in. This is a new dr.