“Why do we need to abstain from water and food before a blood test?

      Blood tests can diagnose certain diseases that cannot be analyzed by taking a history.  Therefore, the results of blood tests require the clearest and most accurate. But, nutrients and substances from the various drinks that we consume enter the bloodstream and can cause blood variability from reality. It’s essential that we refrain from eating and drinking before taking a blood test in order to ensure that the blood results are as accurate as possible.

Preparing for a blood test

• Blood glucose testing must refrain from all kinds of food, drinks and gum for at least 8 hours.
• Blood lipid testing must refrain from all foods, drinks and gum for at least 10-12 hours. 
• Triglycerides and bad fats should be avoided from alcohol 3 days before blood draw.

• For general examination of iron levels in the blood. it’s not necessary to abstain from water, abstain from food before the examination.
• Vitamin B12 levels should be taken 12 hours before blood draw.
• Kidney function do not require water, no food before the test, but red meat diet should be reduced for 2-3 days.

      The "results of a blood test" are an important part that can be attributed to a diagnosis to determine the cause of the disease or find a cure for the disease. But, for the order need to get the most accurate diagnosis before undergoing a blood test. We must strictly follow the recommendations of doctors. It's for our own benefit.

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