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Can a blood test detect old and new alcohol use?

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Yes, by direct and indirect evidence. Here you'll find comprehensive overviews on all kinds of testing (breath, urine, blood, and hair) for evidence of heavy alcohol use defined as >60 units/week: Alcohol Testing - What are the options? read more

If you've had alcohol once in your lifetime, a blood test can't tell that. But it can show liver problems, high blood pressure if they check that, and together with experience, a good doctor can tell if someone is -or was- an alcoholic. read more

Studies how shown that GGT is a potential indicator of an individual's alcohol use. The normal range of GGT within the DNA Legal laboratory is 10-71 iU /L for men. If an individual’s test results are outside of this range, it can be an indicator of alcohol abuse. read more

Carbohydrate-deficient transferrin, known as “%CDT,” is a blood test to detect heavy alcohol use (five or more drinks a day) over the past two weeks.1 This alcohol biomarker can provide clinicians with an objective way to screen and monitor clients in treatment for alcohol use disorders. read more

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