Quick Answer: What Should You Not Eat The Day Before A Blood Test?

What can you not eat 24 hours before blood work?

Sometimes your doctor will ask you to fast for 24 hours before a blood test.

For some tests, you’re allowed to have a few sips of water, plain coffee or black tea.

Other tests don’t allow even a sip of water.

Many healthcare professionals agree that people should avoid coffee and gum before a fasting lab test..

What happens if I fast longer than 12 hours before blood test?

MEDICAL ADVICE. Many other fasting patients attend early, so you may experience some delays. Unfortunately it’s not possible to make appointments. IF YOU FAST LONGER THAN 16 HOURS – YOUR RESULTS MAY NOT BE ACCURATE, OR WE MAY NOT BE ABLE TO PERFORM SOME OF THE TESTS.

Is 10 hours long enough to fast for blood work?

It is important that a person has not had anything to eat or drink other than water for 8 to 10 hours before a fasting blood glucose test. Fasting helps ensure that the blood test records an accurate measure of fasting blood sugar levels. The results help a doctor to diagnose or rule out diabetes.

Can you drink alcohol 12 hours before blood test?

Drinking a lot of alcohol within a day or two of the test can cause abnormal results. It’s recommended that you avoid alcohol for about 48 hours before the test. A virus, such as stomach flu, can cause abnormal results. If you have been ill in the past few days, you should let your healthcare provider know.

What happens if you over fast before a blood test?

If you accidentally ate before a fasting blood test, you should let your healthcare provider know right away so that you don’t receive incorrectly interpreted results. In some cases, you may still be able to receive your test as scheduled, but in other cases, you may need to move your test to a different day.

What should I not eat the night before my glucose test?

Eat a meal low in carbohydrates before this test. Example of foods to eat for breakfast would be eggs, cheese, bacon and or sausage. Avoid breads, cereals and fruit juices.

What happens if you don’t fast before blood work?

What happens if I don’t fast before a blood test? If you don’t fast before a test that requires it, the results may not be accurate. If you forget and eat or drink something, call your doctor or lab and ask if the test can still be done. They can then tell you if you need to reschedule your test.

Does what you eat the night before affect blood test?

McKnight also mentioned the food or drinks you consume the day or night before a blood test does not impact your test results, unlike what you eat or drink the morning of your test. “It’s recommended that you avoid coffee and other liquids during your fast,” McKnight said.

What should you not eat before a blood test?

What to know about fasting before your lab test. With certain blood tests, you may be instructed to fast for up to eight hours before your appointment. Fasting before a blood draw means you don’t eat or drink anything except water. Don’t wait until the day of your blood draw to ask if you should fast.

Is it OK to drink the day before a blood test?

It’s fine to drink water before a blood test, unless you’re instructed otherwise by your doctor. This is different from some surgical procedures, which may require you to have a totally empty stomach. Tap or bottled water are both OK, but leave the squeeze of lemon for another time.

Can what you eat the night before affect cholesterol test?

Fasting for 10 to 12 hours before a cholesterol test ensures that a single food or meal does not affect the outcome of the test. However, if you ate a cheeseburger every day, that probably would affect your numbers. Cholesterol levels are affected by what you eat over time.

What should you not do before a blood test?

Fasting means no eating or drinking for at least 8 hours before the test, except water. After your blood is drawn, you may resume your regular diet. Drink plenty of water before your blood test. This helps keep your blood pressure from dropping.

Can you have black coffee before a blood test?

When fasting for blood tests, you may still drink water, plain coffee, or black tea. Take your regular medications unless you are specifically told to take them only with food.

Can you brush your teeth when your fasting for a blood test?

Fasting means that, with the exception of water, you refrain from eating or drinking for a minimum of 8 hours (10 to 12 hours is preferable) prior to the test. This means no coffee or tea beforehand, but taking your vitamins or medications is okay. Brushing your teeth or using mouthwash won’t influence the test.

Should blood test be done on empty stomach?

We should perform tests on an empty stomach Only a small amount of non-carbonated water can be drunk before the test. Providing the body with calories before the test may cause the results to worsen in the form of an increase in glucose or cholesterol.