A person should only fast before a blood test if their doctor or healthcare professional specifically instructs them to do so. Not all blood tests require fasting. If a doctor or healthcare ...

Blood draws for several kinds of diagnostic tests require you to fast for several hours. Eating or drinking anything besides water can skew the results, leading to you needing to be retested. You may ...

Blood tests are common procedures that healthcare providers use to diagnose certain health conditions and check the status of important measurements like your cholesterol levels or blood sugar. In ...

When you need a blood test that requires fasting, youll want to be aware of things that could cause faulty test results. Drinking diet soda with artificial sweetener before a fasting blood test might ...