U.S. doctors online nowAsk doctors free
Top answers from doctors based on your search:
Disclaimer

Drinking water before fasting blood test

A 23-year-old female asked:
Dr. Gurmukh Singh
Pathology 51 years experience
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
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old male asked:
Dr. Jack Rubin
Nephrology and Dialysis 50 years experience
Fasting Blood Test: Yes, you can drink water and eat no food for your test.
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Terri Washington
Endocrinology 18 years experience
Yes: Plan water no lemon or additives can be taken before a fasting blood test.
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. Douglas Miller
Pathology 43 years experience
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.
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Claude Parola
Internal Medicine 42 years experience
No problem: Yes, it is ok to drink a little water if thirsty.
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Douglas Miller
Pathology 43 years experience
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
Created for people with ongoing healthcare needs but benefits everyone.
A 20-year-old male asked:
Dr. Bennett Werner
Cardiology 46 years experience
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
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old male asked:
Dr. Stuart Hickerson
Family Medicine 34 years experience
Ck/CPK: Creatintine kinase is one of the enzymes in your muscle. If you are male and you have reasonable muscle mass this could be your normal serum level.
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old male asked:
Dr. Silviu Pasniciuc
Internal Medicine 29 years experience
Yes, dehydration and living at high altitude can both contribute to an elevated red blood cell count or polycythemia.Trying to hydrate better is what ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old male asked:
Dr. Miles Mitchell
Specializes in Family Medicine
It's variable: Lab-to-lab variability is because of differences in equipment and techniques. Doctor's are trained to make good decisions despite these challenges in... Read More
Created for people with ongoing healthcare needs but benefits everyone.