After the needle is removed from your arm and the blood has been taken, you should press a soft cloth on the spot to stop the bleeding. Then, a soft cloth or a special bandage will be put on the spot where the blood was taken. If you are allergic to alcohol or tape wipes, tell the person who is taking your blood before starting the test. Let’s discuss; can you drink water while fasting?
Can you drink water while fasting?
When you have to fast for lab tests, you may need to avoid eating for up to 12 hours before the test. Some tests, like glucose eating and cholesterol, need fasting. Ask your doctor if you need to fast before a specific test.
You should avoid drinking alcohol for a whole day before getting your blood taken. If you are not sure about anything, ask your doctor, and their answer might surprise you.
Why Do I Need to Perform Fasting?
![Can you drink water while fasting Can you drink water while fasting](http://datos.org/wp-content/uploads/2023/07/istockphoto-625209642-612x612-1.jpg)
Before knowing whether you can drink water while fasting, let us understand why you have to fast before some blood tests. The things you drink and eat can go into your blood and affect the result of some blood tests.
Usually, you have to dast before going for a blood sugar test. You also need to fast before a lipid profile test, which measures different kinds of cholesterol and triglycerides. There might be other tests that need fasting too.
If you fast or fast for the right amount of time, the test results might be right. Then you might have to do the blood test all over again. If you can not fast, talk to your doctor while going for the test.
Can I Drink Water When Fasting?
Yes, you can drink water when fasting if it is completely fine. In fact, water is the only thing you can have while fasting. Drinking water can help you feel better while fasting, and it makes it easier for the lab technician to take your blood. Your blood is made up of 50% water, so when you are hydrated, it is easier to find your veins and take the blood out.
How Long Do I Need to Fast?
Before getting your blood lipid or sugar profile checked, your doctor may ask you to fast for up to 8 hours. However, your doctor may have different instructions for you, so it is important to follow their recommendations whenever you can.
You can drink or eat something right after your blood is taken, so it is a good idea to bring a snack with you. It is also a good idea to schedule your blood test in the morning, so you will spend most of the fasting time when you are sleeping.
Should I Take My Medications When Fasting?
Often, you should keep taking your medicines as usual when fasting unless your doctor says otherwise. If you take any supplements like minerals or vitamins, ask your doctor for advice. Only make sure you do not mix up your medicine schedule or forget to take any important medicines during the fast time.
Types of fasted blood tests
There are many types of blood tests that require fasting. Some of the most common are:
- Fasting blood glucose test: This test measures the amount of glucose (sugar) in your blood. It is used to diagnose diabetes and prediabetes.
- Lipid profile: This test measures the levels of cholesterol, triglycerides, and other fats in your blood. It is used to assess your risk of heart disease and stroke.
- Liver function test: This test measures the levels of enzymes and other proteins in your blood that are produced by the liver. It is used to diagnose liver disease.
- Thyroid function test: This test measures the levels of thyroid hormones in your blood. Thyroid hormones are important for many bodily functions, including metabolism and heart rate.
- Vitamin B12 test: This test measures the levels of vitamin B12 in your blood. Vitamin B12 is important for red blood cell production and nerve function.
In general, you will need to fast for 8 to 12 hours before these tests. This means that you should not eat or drink anything (except water) for at least 8 hours before the test. You should also avoid smoking and chewing gum, as these can also affect the results of the test.
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