If you need to do anything to prepare for your test, you can eat and drink as usual. If you are having a “fasting blood test”, you will be told not to eat or drink anything for at least 24 hours before the test.
If you have a fever, you may be advised to stay home from work or school for a few days to allow your body to adjust to the change in temperature.
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What should you not eat before a blood test?
If your health care provider has told you to fast before a blood test, it means you should not eat or drink anything, except water, for at least two hours before the test. If you have a fever, you may need to stay home from work or school for a few days.
What foods can affect a blood test?
Caffeinated beverages such as coffee and black tea are considered diuretics, and can affect the speed of digestion. They should usually be avoided before lab testing. Consuming alcoholic beverages can affect the results of blood tests. If you are taking any medications or supplements, be sure to check with your doctor or pharmacist to make sure they are safe for you.
Does what you eat the day before a blood test matter?
The food or drinks you consume the day or night before a blood test does not affect your 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, but if you do choose to drink a cup of coffee or other liquid, it’s best to do so at the beginning of the fast.
How can I improve my blood test results quickly?
If you want the most accurate blood test results, your blood should be drawn when you’re rested. He it’s best to avoid strenuous exercise for at least 24 hours before a cholesterol test because a workout can alter the results.
How can I make my blood draw easier?
It is possible to wear clothing with sleeves that can be raised over the elbow. Cold weather can cause veins to dilate, so keep your arms warm. If you have a vein that has been successful in the past, let the phlebotomist know. The smallest needle possible is used for each procedure.
If you are having a hysterectomy, you may be asked to wear a compression sleeve for the first few days after surgery. This will help prevent blood clots from forming in your arteries and veins. You may also wear compression sleeves for a few weeks after your surgery to help reduce the risk of blood clotting.
How much water should you drink before a blood test?
Start drinking more fluids the day before your blood draw, and continue to drink water until you have your blood drawn. Most sources that an adult should drink 64 ounces of water per day for good health, which is more than enough for most people. If you’re not sure how much fluid you should be drinking, consult your doctor or pharmacist.
