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 ...

Fasting before blood tests helps ensure accurate results by reflecting your true health status. Schedule blood tests in the morning to minimize waking hours spent fasting. Drink water to stay hydrated ...

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 ...

It depends on the type of coffee you drank and the type of blood test you have scheduled. Black coffee typically does not affect tests that measure red blood cell count, liver function, or kidney ...