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Doctor insights on: Can I Drink Water If Im Fasting For Blood Work

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Dr. Debra Rosenblatt
66 doctors shared insights

Hydration (Definition)

Hydration simply means increasing fluid intake whether its by you drinking more fluid ...Read more


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Is it okay to drink water when fasting for blood work?

Is it okay to drink water when fasting for blood work?

Yes: Drinking water is fine unless directed specifically by your physician to avoid it. Fasting lab is looking for blood sugar and cholesterol which would be affected by coffee, food, and milk. I usually recommend to my patients to take their routine meds even when fasting except for medications that would affect the blood sugar. ...Read more

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If having blood work done for physical in morning can you drink water before? Doctor said no food or coffee

Yes: As long as this is a routine physical with no testing that will involve anesthesia (like endoscopy) and the water is plain water without flavoring or sugar, it is okay to have some water prior to routine blood work and a physical exam. ...Read more

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I had lab work done. my blood sugar level can back high. was fasting blood work & didn't drink any water, would that cause the sugar level to be high?

I had lab work done. my blood sugar level can back high. was fasting blood work & didn't drink any water, would that cause the sugar level to be high?

High blood sugar tes: Test result probably not altered by not drinking water for a short time. Double check the fasting blood sugar test and ask for the test that gives blood sugar average over the last three months or so, called HgAc1 to try to rule out diabetes. ...Read more

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When fasting for 12 hrs to do a blood test can u drink water ?

When fasting for 12 hrs to do a blood test can u drink water ?

Fasting Blood Test: Yes, you can drink water and eat no food for your test. ...Read more

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Am i allowed to drink water while fasting for a blood sugar test?

Yes: In fact you should drink a normal amount of non-caloric liquids to avoid becoming dehydrated, which can elevate blood sugar. ...Read more

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Can i drink water before a fasting blood sugar test?

Can i drink water before a fasting blood sugar test?

Yes: Water has no carbohydrates (the part of food that causes a rise in blood sugar) so there is no reason you can't drink it before a blood sugar test. ...Read more

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When fasting for metabolic blood test can I drink water?

Yes: Plan water no lemon or additives can be taken before a fasting blood test. ...Read more

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Is it safe to drink water when you are fasting for a glucose blood test?

Is it safe to drink water when you are fasting for a glucose blood test?

Yes: Water is fine before a blood glucose test, but don't eat any food or drink other liquids which might falsely elevate the glucose level in the blood. ...Read more

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Fasting blood sugar 181.8, hba1c > 7%, taking all vitamins, exercise 6 hrs/week, eat no sugar, eat high fibre, drink water, juice, wt. 67kilo, ht 5'5"?

Fasting blood sugar 181.8, hba1c > 7%, taking all vitamins, exercise 6 hrs/week, eat no sugar, eat high fibre, drink water, juice, wt. 67kilo, ht 5'5"?

Look into Paleo : Your lab numbers suggest you're on the path to diabetes. Even though you don't eat "sugar" any fiber or starch that your body can digest turns into sugar and fruit juice is sugar. Even things like diary that is thought of as healthy has sugar (lactose is a type of sugar). A person with lab numbers like yours has to limit all sugars and heal the damage. The paleo approach can help you do both. ...Read more