Get Virtual Care
For Businesses
About Us
A member asked:
Dr wants me to do creatnine/gfr and bun but he wants me to drink 1 litter water b4 test. why the water? can water mask abnormal results 4 early ckd ?
A doctor has provided 1 answer
Best guess...: When dehydrated, blood tests can suggest a degree of kidney failure. One clue that dehydration may be contributing to the abnormal tests is a high BUN/Cr ratio. Drinking plenty of water before the next test will clarify the issue rather than confuse it. It is likely that follow-up tests will be done to be sure that your kidney function is stable. It is important to follow pre-test instructions.
Answered 4/6/2015
3k views
Thank
Related Questions
A member asked:
Docs keep saying i'm dehydrated, but i drink 1/2 gallon water per day, pee 12 times at least a day. I don't know what else to do? Egfr 57 bun/cre norm
A doctor has provided 1 answer
A member asked:
My urine has a very bad smell almost old. I drink a lot of water & unsweet tea, no soda or coffee and i got CKD for STDs and UTI but was clear ?
A doctor has provided 1 answer
A member asked:
Hypochondria abt getting CKD as I am always dehydrated&have dry mouth n tongue.RFT(sr creatinine,NA,K),urine analysis normal.I drink 2 lt water
A doctor has provided 1 answer
A member asked:
My Bun/Creatinine is 31.9 but I drink 2 liters of water every day. I have had a lot of kidney stones in the past. Could this high number just be from kidney damage? Thanks?
3 doctors weighed in across 3 answers
People also searched for:
Creatinine 1.4, GFR 84, BUN 9 and others normal.4mm stone in right kidney.am I suffering from ckd?how much water should I drink?
I got some blood work done and my GFR was only 68. My BUN/creatinine was 9.6 which Ive read is normal. Im only 20 years old and that 68 seems way too loware my kidneys ok? I take a lot of NSAIDS for chronic pain and dont drink enough water?
My BUN was 20 today. Can dehydration cause it to be higher? Mine has always been on low end. Creatinine is normal, no other symptoms or abnormal tests. I have barely been drinking a bottle of water per day for quite a while?
Hello!! I'm a 39, thin, fit (no meat diet)woman with blood work that came back the following: Bun:25 and bun/ creatine level: 42 Creatinine: 0.6. GFR: 114 Doc told me to hydrate with 64oz water and will re test the BUN and Creatinine level. Bad!?
How much water should I drink before blood draw? My bloodwork is always perfect except for BUN/Creatinine ratio. Just a tick over normal every time. Dr says because of dehydration. I try to drink 16 oz prior. Not enough??
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
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.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
