Fasting can you drink coffee blood work

This may have a dehydrating effect. The less hydrated you are, the harder it will be for a nurse or other medical professional to test your blood for a vein.

This can make the blood test more complicated or more painful for you. Blood tests differ depending on what the doctor checks and what the criteria are for each blood test. Blood tests are basically broken down into two distinct groups. Non-fasting or fasting. Depending on the test you have carried out, the answer to whether or not you can drink coffee could be in one of these two categories. How long should you fast before a blood test? These blood panels look at certain levels, and these tests usually require the patient to refrain from eating or drinking any kind of food 8 to 12 hours prior to testing.

You can drink as much coffee as you want. Low-density lipoprotein LPD is a type of cholesterol. Health Conditions Discover Plan Connect. Medically reviewed by Deborah Weatherspoon, Ph. How long should you fast before a blood test? Is it OK to drink water before a blood test? What if your child needs to fast before a blood test? What about fasting for a blood test during pregnancy?

Read this next. Blood Glucose Test. Medically reviewed by Maria S. Prelipcean, MD. Basic Metabolic Panel. Medically reviewed by University of Illinois. Diabetes Tests. Dehydration can affect certain blood tests such as cholesterol, electrolyte and BUN tests. Be sure to stay hydrated before your test by drinking the recommended amount of water for your weight and activity level. Any beverage other than water should not be consumed before a blood test, unless approved by your healthcare provider.

Alcohol, soda, and juice contain high quantities of sugar, which can interfere with many common test results. Black coffee, tea, and other caffeinated beverages are diuretics, which can have a dehydrating effect and cause test results to be inaccurate. For best results, avoid drinking all non-water beverages for the recommended amount of time before your test. If you have been instructed to fast before your blood test and you accidentally eat or drink something during the fasting window, it is important to notify your healthcare provider or the person drawing your blood.

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