One test they may order is a fasting lab test. Before this blood test, you may be asked to stop eating or drinking for a few hours before. While not all lab tests require it, some tests require fasting for the most accurate results. Some tests let you have a few sips of water.
You should avoid coffee and gum before a fasting lab test because both substances affect your digestive system and can change the results of your test. You should also avoid alcohol, smoking and exercise. If you take medications, continue taking them as normal unless your doctor says otherwise. Food and drinks can affect your results because sugar, fats, enzymes, minerals and cholesterol all absorb into your blood stream. Most likely, they will instruct you to reschedule the blood test at a time when you will be able to successfully complete the fast before the test.
Your physician will let you know the steps you need to take before your blood test, including whether or not fasting is required and for how long. By following all testing instructions and best practices including how to fast , you can ensure a smooth testing process and the most accurate results.
Are you a patient in need of lab testing? Find a convenient testing location and schedule an appointment near you. Sona Kirpekar , our in-house Medical Consultant. How to Fast for a Blood Test Are you a clinical lab looking to grow your reach?
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