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Norfolk, VA
A 26-year-old female asked:

Can drinking a lot of water before urine test alter the results if you think you have protein in urine. will that make results negative when its actually positive?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 50 years experience
Could: Urine protein is measured just as mg/dL would be affected by drinking more water and making urine dilute. As a counterbalance to that if protein is measured with reference to urine creatinine concentration that can provide a corrective factor for dilute urine. If your doctor is concerned , s/he may ask you to collect 24-hour urine. for info visit this: https://www.aafp.org/afp/2000/0915/p1333.html
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Last updated Oct 9, 2020

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