So, your doctor ordered blood work? Great! Getting a clear picture of your health is important. But before you head to the lab, there's often one crucial instruction: fasting. But *how long to fast before blood work* really matters for accuracy.
Generally, a 8-12 hour fast is recommended. This means no food or caloric beverages (sorry, no lattes!) after a certain time the night before your appointment. Water is usually okay, and sometimes even encouraged, to stay hydrated. The specific duration depends on the tests your doctor ordered. For example, cholesterol tests often require a full 12-hour fast.
Why the fuss? Fasting allows your body to process food completely, providing a baseline for certain measurements. Eating or drinking beforehand can skew results, leading to inaccurate readings. Always confirm the fasting requirements with your doctor or the lab performing the blood work to ensure you get the most reliable results. Failing to follow instructions can mean repeat tests, and nobody wants that!
