U.S. doctors online nowAsk doctors free
Brooklyn, NY
A 29-year-old female asked:

Is it okay if i dont drink a water prior to fasting hormones bloodwork? would that affect the test results? i only took few sips of water 3-4 mins before a blood draw. i didnt feel dehydrated.had big cup of tea night before, 9 hours prior?

2 doctor answers3 doctors weighed in
Dr. Yvette Kratzberg
Pediatrics 26 years experience
I you are concerned about diluting your blood sample by drinking water, rest assured that it would take 2-3 liters of water to do this. One cup or glass of water would not affect the fasting hormones bloodwork.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Clarence Grim
Endocrinology 59 years experience
It will also be related to how long you have been out of bed before blood drawn. s
Nov 22, 2021
Dr. Gurmukh Singh
Pathology 51 years experience
Not drinking water overnight is not likely to affect your hormone levels. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV, Flu and Covid vaccines. Wish you good health!
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Nov 22, 2021


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.