How long does........

[buddy]

How long does alcohol show in your blood-ie in tests and breathalisers.Just curiousity!!!

[jimbobsbits]

"They" say that it takes an hour per unit of alcohol to disappear from your blood - which is why early morning driving after a heavy night may be a bad idea!

[archbishop]

A unit by the way is half a pint of beer or 1 (25ml) shot of spirits.

[darth vader]

quite correct. Alcohol is pretty uniform in it's dispersal rate from the body and a pint every 2 hours is about right.

[Fitzer]

The 'pint every two hours' is based upon a 'standard' strength beer of 3.6%ABV. Stella at 5% contains about 3 units per pint.

[Thomas]

Your test must be coming up. If you fail wait longer next time.

[New Forester]

I believe that people vary quite a bit in how quickly they metabolise alcohol. It would therefore be foolish to rely on sums calculated for the "average" person -- your liver might be a slow one.