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Fourteen (14) hours is best for typical blood work.

Consider not eating after supper, then skipping breakfast. Often that approaches 14 hours.

Keep drinking water during this period as it keeps the blood volume high and makes the vein easier to access.

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Obie Ondricka

Lvl 13
3y ago

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Related Questions

How long do you fast for a fasting blood test for metabolic functions?

that depends how fast you can fast when fasting for a fasting blood test for metabolic functions.


When fasting for blood work can you drink milk?

No, it is generally recommended to only consume water when fasting for blood work. Milk contains calories and nutrients that can affect the results of certain blood tests. It is best to follow your healthcare provider's instructions for fasting before blood work.


How long after a fasting blood test can you eat?

After a fasting blood sample you can eat immediately.


What blood tests for dogs and cats require fasting?

Blood urea nitrogen tests require a 12 hour fasting before hand. Preanesthetic blood work requires a fasting before hand also. Most all blood work requires a 12 hour fasting before hand.


Is intake of fluid allowed when fasting for blood work?

It's usually okay to drink water while fasting for blood work, as long as it is plain water without any additives or flavorings. However, it's best to follow the specific fasting instructions provided by your healthcare provider to ensure accurate test results.


When fasting for blood work can you drink lemonade?

No. It has sugar and affects sugar levels in blood.


Fasting before blood draw?

You only need to fast before blood work if you are having a fasting blood glucose blood test. Not each blood drawing will require you to fast. If you are required to fast, you may still drink water before your blood work.


When someone is fasting before having blood work done can they have coffee or tea?

It is typically advised to avoid consuming coffee or tea when fasting before blood work, as they can affect certain blood test results (e.g., glucose levels). It's best to stick to plain water during the fasting period to ensure accurate test results.


Can you drink black coffee before a blood test that requires fasting but not for blood work?

It is generally recommended to only consume water before a fasting blood test, as black coffee can potentially affect the results by interfering with certain measurements. However, for regular blood work that does not require fasting, black coffee should not have an impact on the results.


What can you not have before fasting blood work?

Before fasting blood work, you should avoid consuming food or drinks other than water for a certain period of time (typically 8-12 hours) to ensure accurate test results. It's important to follow your healthcare provider's specific instructions to obtain the most accurate results from your fasting blood work.


I have a blood sugar of 114 and I was fasting?

is 114 normal for a fasting blood sugar


What blood work do you need to fast for?

Fasting is typically required for blood work that measures glucose levels, such as a fasting blood glucose test or an oral glucose tolerance test, as well as lipid panel tests that assess cholesterol and triglycerides. Fasting usually means no food or drink (except water) for 8-12 hours prior to the test. It's important to follow your healthcare provider's specific instructions regarding fasting for any blood work. Always consult with your doctor if you have questions about preparation for lab tests.