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drinking water before fasting blood test

A 23-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
No: Water with electrolytes will not affect thyroid blood tests. However, you are wasting your money on such water. Tap water is just as good if not bette ... Read More
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A 37-year-old member asked:
Dr. Jacalyn Bishop
19 years experience Pediatric Endocrinology
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.
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A 33-year-old male asked:
Dr. Jack Rubin
47 years experience Nephrology and Dialysis
Fasting Blood Test: Yes, you can drink water and eat no food for your test.
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A 37-year-old member asked:
Dr. Terri Washington
15 years experience Endocrinology
Yes: Plan water no lemon or additives can be taken before a fasting blood test.
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A 41-year-old member asked:
Dr. Douglas Miller
40 years experience Pathology
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.
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A 44-year-old member asked:
Dr. Claude Parola
39 years experience Internal Medicine
No problem: Yes, it is ok to drink a little water if thirsty.
A female asked:
Dr. Michael Kleerekoper
A Verified Doctor answered
A US doctor answered Learn more
Water: Surely if you drink loads of water you will have lots of water to urinate! I doubt it will have much/if any reason to think it would have a lower bloo ... Read More
A 37-year-old member asked:
Dr. Douglas Miller
40 years experience Pathology
Yes: Water is fine; nobody wants you to be dehydrated just for some blood tests, but they don't want you to take any food or other fluids which may elevate ... Read More
A 20-year-old male asked:
Dr. Bennett Werner
43 years experience Cardiology
Normal: Strenuous muscular exercise elevates the CK - this is NOT abnormal. Drinking water is certainly a healthy thing to do when you're sweating, but it wil ... Read More
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