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A 60-year-old female asked:

Can drinking lots of water before a saliva and urine test for alcohol produce inaccurate results? my sister who is an alcoholic and in court mandated treatment did this today and got a result that was negative. the family knows she has been drinking?

1 doctor answer • 2 doctors weighed in
Dr. Gurmukh Singh
Dr. Gurmukh Singhanswered
Pathology 51 years experience
Diluting the urine by drinking water is detectable by urine examination. A good lab tests for other markers to rule out this gamesmanship. There are other tests than cannot be affected by drinking more water.
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Reviewed Jun 05, 2021
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Dr. Sue Ferranti
Dr. Sue Ferranti agrees1 doctor agrees

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Last updated Jun 5, 2021

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