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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is It Okay To Drink Water While Fasting For Blood-work ?

I was told not to eat or drink anything after midnight prior to the day I m to have bloodwork done for a cholestoral screening. Can I consume drinking water?
Mon, 21 Dec 2009
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  Anonymous's Response
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Standard rules say that in order the sample  to be "fasting", you must not have had anything to eat or drink from 8-12 hours. At least 8 hours, but not more than 12, or you will run the risk of dehydration or fainting. To help counteract that, make sure you drink plenty of water. This will not in any way jeopardize your test results and will make your veins much easier to find. You are able to take any medications, but refrain from any insulin or other glucose-lowering medication until you have eaten.
Note: For further follow-up, discuss your blood glucose reports with our diabetologist. Click here.
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Is It Okay To Drink Water While Fasting For Blood-work ?

Standard rules say that in order the sample to be "fasting", you must not have had anything to eat or drink from 8-12 hours. At least 8 hours, but not more than 12, or you will run the risk of dehydration or fainting. To help counteract that, make sure you drink plenty of water. This will not in any way jeopardize your test results and will make your veins much easier to find. You are able to take any medications, but refrain from any insulin or other glucose-lowering medication until you have eaten.